DQR / DQRF Waterproof Safety Light Curtain

Name: DQR / DQRF Waterproof Safety Light Curtain
Brand: DAIDISIKE
SKU: dqr-dqrf-waterproof-safety-light-curtain
Availability: InStock

Waterproof safety light curtain for washdown, splash and humid production areas: IP65 as standard, with an IP68 waterproof-enclosure special-order upgrade (DQRF), 7 beam pitches from 10 to 80 mm across 4-32 beams, response time <=15 ms, and NPN/PNP transistor output. Designed to the Type 4 architecture of IEC 61496 and Category 4 of ISO 13849-1.

▶ Watch it in action: Waterproof Safety Light Curtain for Washdown & Outdoor Machinery (IP65 / IP68 Option)

DQR / DQRF Waterproof Safety Light Curtain - product photo

🔍 Click to enlarge · 1/11

Technical Specifications

Curtain Type	Through-beam (opposed mode) -- separate transmitter and receiver
Safety Design Basis	Designed to the Type 4 architecture of IEC 61496-1/-2/-3 and Category 4 (PLd) of ISO 13849-1:2015; catalog also cites GB/T19436.1, GB4584-2007 and EN 61496-3:2019 Type 4. Certification documents are available on request.
EMC Certification	Holds TÜV SÜD Attestation of Conformity No. E8A 104143 0001 (Rev. 00) for electromagnetic compatibility under EU Directive 2014/30/EU, tested to EN 61000-6-2:2005 and EN 61000-6-4:2007/A1:2011. Certificate held by Foshan DAIDISIKE; covers the DQA, DQR, DQRF, DQC, DQZ, DQE and DQT series. (This is an EMC certificate; it does not certify the machine-safety / ESPE function.)
Beam Pitch	10 / 14 / 20 / 25 / 30 / 40 / 80 mm
Detection Accuracy (min. detectable object)	18 / 22 / 28 / 33 / 38 / 48 mm for the 10 / 14 / 20 / 25 / 30 / 40 mm pitches respectively (= pitch + 8 mm); the catalog's base parameter table does not state a figure for the 80 mm pitch.
Number of Beams	6, 8 ... 32 (10/14/25 mm pitch); 4, 6 ... 32 (20/30/40/80 mm pitch)
Protected Height	Beam pitch x (number of beams - 1); 50-2480 mm across the published model range
Sensing / Detection Distance	30-3000 mm (code A, default) or 30-6000 mm (code B); the catalog states any distance beyond the 0.3-3 m default requires contacting customer service
Response Time	<= 15 ms
Ambient Light Immunity	10,000 lux (incidence angle >= 5 degrees); receiver-face tolerance: incandescent 3,000 lux / sunlight 10,000 lux
Enclosure Rating	DQR (no suffix): IP65, standard/default. DQRF (F suffix): fits an added waterproof outer enclosure, catalog-labeled an IP68 "special customization."
Housing Dimensions	36 x 36 mm x L (L = transmitter/receiver length) per the parameter table; the mechanical outline drawing shows the bar as a cylindrical Ø50 mm waterproof tube
Mechanical Envelope Formulas	H (protected height) = (n-1) x K; L (total light-curtain length) = P + H + J + 16 mm + 17 mm; Z (bracket center-to-center distance) = L + 34 mm, where n = beam count, K = beam pitch. K/P/J by pitch (10/14/20/25/30/40/80 mm): K = 10/14/20/25/30/40/80; P = 5/7/10/12.5/15/20/40; J = 31/31/25/25/25/25/25 (all mm)
Controller	DQCA / DQCA2
Supply Voltage	DC 12/24 V; AC 110-220 V (relay-output version)
Current Consumption	<= 200 mA
Output	NPN / PNP type, sink current 500 mA, residual voltage < 1.5 V, with polarity, short-circuit and overload protection; NO/NC selectable via model signal code (A/B/C/D)
Output State	ON when beams clear (receiver indicator green)
Indicators	Transmitter: power (red). Receiver: output -- clear (green) / blocked (red)
Light Source	Modulated infrared LED
Connection	Circular aviation connector (M12 cable), 304 stainless-steel screws, 36 x 36 mm connector size; transmitter 4-core / receiver 5-core (single output), dual 7-core (two output groups)
Housing Material	Aluminium alloy; end caps ABS-reinforced nylon
Operating Temperature	-10 to +40 degrees C (non-condensing); storage -25 to +55 degrees C
Ambient Humidity	Operating 35-85% RH; storage 35-95% RH

Overview

DQR(F) is the waterproof member of Daidisike's safety light curtain family, presented in the catalog under the heading 超强防水光幕 ("super-strong waterproof light curtain"). The base model (DQR) is rated IP65 as standard; adding the F suffix (DQRF) fits an additional waterproof outer enclosure -- the catalog labels this an IP68 "special customization" (超强IP68级防水特殊定制) -- raising ingress protection beyond the IP65 default. It targets machine builders and end users who need presence-sensing safety guarding in areas exposed to coolant/cutting-fluid splash, water washdown, or humid/outdoor conditions where a standard indoor-rated light curtain is not suitable. It is designed to the Type 4 architecture of IEC 61496-1/-2/-3 and to Category 4 (PLd) of ISO 13849-1:2015, per the catalog's stated compliance list (which also cites GB/T19436.1, GB4584-2007 and EN 61496-3:2019 Type 4, plus GB/T19001-2016 idt ISO 9001:2015 for the quality-management system). Certification documents are available on request.

The series offers seven beam-pitch options (10, 14, 20, 25, 30, 40 and 80 mm) covering 4 to 32 beams, with protected height spanning 50 mm to 2480 mm across the published model range. Response time is 15 ms or less, and the housing uses a 304-stainless-steel-screw waterproof aviation connector (36 x 36 mm) linked via M12 cable; the catalog's mechanical outline drawing also shows a cylindrical Ø50 mm waterproof tube housing for the transmitter/receiver bars. Output is NPN or PNP transistor (NO/NC selectable via the model's signal code), wired via transmitter 4-core / receiver 5-core or dual 7-core cable, with DQF-07 top/bottom mounting brackets supplied as standard. Sensing/detection distance defaults to 0.3-3 m; a 0.3-6 m option exists in the model code, but the catalog notes that any distance beyond the default requires contacting customer service.

Key Facts — DQR at a glance

DQR is rated IP65 as standard; adding the F suffix (DQRF) fits an additional waterproof outer enclosure that the catalog markets as "超强IP68级防水特殊定制" (super-strong IP68-grade waterproof, special customization), raising the rating to IP68 -- this is presented as a special-order upgrade, not a standard off-the-shelf spec.
The DQR is covered by TÜV SÜD Attestation of Conformity No. E8A 104143 0001 for electromagnetic compatibility (EU EMC Directive 2014/30/EU), tested to EN 61000-6-2:2005 and EN 61000-6-4:2007/A1:2011.
The DQR(F) series offers seven beam-pitch options -- 10, 14, 20, 25, 30, 40 and 80 mm -- covering 4 to 32 beams depending on pitch, with protected height spanning 50 mm to 2480 mm across the catalog's full model list.
Detection accuracy (minimum detectable object) is explicitly published for six of the seven pitches: 18 / 22 / 28 / 33 / 38 / 48 mm for the 10 / 14 / 20 / 25 / 30 / 40 mm pitches respectively; the catalog's base parameter table does not state a figure for the 80 mm pitch.
Response time is 15 ms or less, and the curtain rejects ambient light up to 10,000 lux at an incidence angle of 5 degrees or more (receiver-face tolerance: 3,000 lux incandescent / 10,000 lux sunlight).
Default sensing/detection distance is 0.3-3 m (model code A); a 0.3-6 m option (code B) exists in the model-code table, but the catalog states that exceeding the default distance requires contacting customer service, so it is not a routine off-the-shelf combination for every model.
The housing uses a 304-stainless-steel-screw waterproof aviation connector sized 36 x 36 mm, linking via M12 cable; the mechanical outline drawing shows the transmitter/receiver bars as a cylindrical Ø50 mm waterproof tube, while the parameter table separately lists "36 x 36 mm x L" as the sensor housing dimension.
DQR(F) runs on DC 12/24 V, or AC 110-220 V on the relay-output version, drawing 200 mA or less, through a DQCA/DQCA2 controller shared with other Daidisike light-curtain series, over an operating range of -10 to +40 degrees C (non-condensing).

Features & Benefits

Purpose-built for wet and washdown environments

Named the "waterproof safety light curtain" in the 2026 catalogue, DQR(F) is the dedicated series for coolant splash, water washdown, and humid production areas within the product line.

Two protection levels to match the environment

IP65 as standard (DQR); add the F suffix for a waterproof enclosure and IP68 protection (DQRF), letting buyers match protection level to actual exposure without over- or under-spec'ing.

Full resolution range retained in the waterproof platform

Seven beam-pitch options (10, 14, 20, 25, 30, 40, 80mm) covering 4 to 32 beams, matching the selection breadth of the standard-environment series.

Wide protective-height coverage

Protective height spans 50mm to 2480mm across the model range, covering everything from small-opening finger protection to full-body access guarding.

Transistor output for direct PLC/safety-relay interfacing

PNP transistor output as documented in the catalogue wiring diagram, with transmitter 4-core / receiver 5-core / dual 7-core cabling.

Standard mounting brackets included

DQF-07 top/bottom mounting brackets are supplied as standard with DQR; DQRF uses the same bracket for two-end mounting.

Applications

Machining lines with coolant/cutting-fluid splash — Protects entry points on machine tools and automation cells exposed to coolant or cutting-fluid splash, matching the IP65/IP68 protection levels designed for liquid-splash environments.

Food & beverage washdown stations — Guards entry detection at stations that undergo regular water washdown; the DQRF waterproof enclosure (IP68) is built to withstand washdown operations.

Outdoor or semi-outdoor entry/loading points — Suited to gatehouses, access lanes, and loading/unloading platforms exposed to rain or humid outdoor air.

Plating, cleaning, and spray process areas — Provides safety guarding for electroplating, cleaning, and spray process sections where high humidity is a core condition of the work area.

Fine-opening finger/hand protection in wet zones — The 10mm beam-pitch tier delivers finger-level detection accuracy for small openings in wet or splash-exposed areas.

Full-body access guarding at wet-area machine perimeters — Model coverage up to 2480mm protective height supports full-body entry guarding around equipment perimeters in humid or wet areas.

Models & Ordering Information

204 standard models across 7 beam-pitch options. Select the pitch your risk assessment calls for, then the protective height that covers the opening.

Protective height = beam pitch x (beam count - 1).

DQR / DQRF Waterproof Safety Light Curtain — 10 mm beam pitch, 28 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR06/10-50	10	6	50
DQRF06/10-50	10	6	50
DQR08/10-70	10	8	70
DQRF08/10-70	10	8	70
DQR10/10-90	10	10	90
DQRF10/10-90	10	10	90
DQR12/10-110	10	12	110
DQRF12/10-110	10	12	110
DQR14/10-130	10	14	130
DQRF14/10-130	10	14	130
DQR16/10-150	10	16	150
DQRF16/10-150	10	16	150
DQR18/10-170	10	18	170
DQRF18/10-170	10	18	170
DQR20/10-190	10	20	190
DQRF20/10-190	10	20	190
DQR22/10-210	10	22	210
DQRF22/10-210	10	22	210
DQR24/10-230	10	24	230
DQRF24/10-230	10	24	230
DQR26/10-250	10	26	250
DQRF26/10-250	10	26	250
DQR28/10-270	10	28	270
DQRF28/10-270	10	28	270
DQR30/10-290	10	30	290
DQRF30/10-290	10	30	290
DQR32/10-310	10	32	310
DQRF32/10-310	10	32	310

DQR / DQRF Waterproof Safety Light Curtain — 14 mm beam pitch, 28 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR06/14-70	14	6	70
DQRF06/14-70	14	6	70
DQR08/14-98	14	8	98
DQRF08/14-98	14	8	98
DQR10/14-126	14	10	126
DQRF10/14-126	14	10	126
DQR12/14-154	14	12	154
DQRF12/14-154	14	12	154
DQR14/14-182	14	14	182
DQRF14/14-182	14	14	182
DQR16/14-210	14	16	210
DQRF16/14-210	14	16	210
DQR18/14-238	14	18	238
DQRF18/14-238	14	18	238
DQR20/14-266	14	20	266
DQRF20/14-266	14	20	266
DQR22/14-294	14	22	294
DQRF22/14-294	14	22	294
DQR24/14-322	14	24	322
DQRF24/14-322	14	24	322
DQR26/14-350	14	26	350
DQRF26/14-350	14	26	350
DQR28/14-378	14	28	378
DQRF28/14-378	14	28	378
DQR30/14-406	14	30	406
DQRF30/14-406	14	30	406
DQR32/14-434	14	32	434
DQRF32/14-434	14	32	434

DQR / DQRF Waterproof Safety Light Curtain — 20 mm beam pitch, 30 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR04/20-60	20	4	60
DQRF04/20-60	20	4	60
DQR06/20-100	20	6	100
DQRF06/20-100	20	6	100
DQR08/20-140	20	8	140
DQRF08/20-140	20	8	140
DQR10/20-180	20	10	180
DQRF10/20-180	20	10	180
DQR12/20-220	20	12	220
DQRF12/20-220	20	12	220
DQR14/20-260	20	14	260
DQRF14/20-260	20	14	260
DQR16/20-300	20	16	300
DQRF16/20-300	20	16	300
DQR18/20-340	20	18	340
DQRF18/20-340	20	18	340
DQR20/20-380	20	20	380
DQRF20/20-380	20	20	380
DQR22/20-420	20	22	420
DQRF22/20-420	20	22	420
DQR24/20-460	20	24	460
DQRF24/20-460	20	24	460
DQR26/20-500	20	26	500
DQRF26/20-500	20	26	500
DQR28/20-540	20	28	540
DQRF28/20-540	20	28	540
DQR30/20-580	20	30	580
DQRF30/20-580	20	30	580
DQR32/20-620	20	32	620
DQRF32/20-620	20	32	620

DQR / DQRF Waterproof Safety Light Curtain — 25 mm beam pitch, 28 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR06/25-125	25	6	125
DQRF06/25-125	25	6	125
DQR08/25-175	25	8	175
DQRF08/25-175	25	8	175
DQR10/25-225	25	10	225
DQRF10/25-225	25	10	225
DQR12/25-275	25	12	275
DQRF12/25-275	25	12	275
DQR14/25-325	25	14	325
DQRF14/25-325	25	14	325
DQR16/25-375	25	16	375
DQRF16/25-375	25	16	375
DQR18/25-425	25	18	425
DQRF18/25-425	25	18	425
DQR20/25-475	25	20	475
DQRF20/25-475	25	20	475
DQR22/25-525	25	22	525
DQRF22/25-525	25	22	525
DQR24/25-575	25	24	575
DQRF24/25-575	25	24	575
DQR26/25-625	25	26	625
DQRF26/25-625	25	26	625
DQR28/25-675	25	28	675
DQRF28/25-675	25	28	675
DQR30/25-725	25	30	725
DQRF30/25-725	25	30	725
DQR32/25-775	25	32	775
DQRF32/25-775	25	32	775

DQR / DQRF Waterproof Safety Light Curtain — 30 mm beam pitch, 30 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR04/30-90	30	4	90
DQRF04/30-90	30	4	90
DQR06/30-150	30	6	150
DQRF06/30-150	30	6	150
DQR08/30-210	30	8	210
DQRF08/30-210	30	8	210
DQR10/30-270	30	10	270
DQRF10/30-270	30	10	270
DQR12/30-330	30	12	330
DQRF12/30-330	30	12	330
DQR14/30-390	30	14	390
DQRF14/30-390	30	14	390
DQR16/30-450	30	16	450
DQRF16/30-450	30	16	450
DQR18/30-510	30	18	510
DQRF18/30-510	30	18	510
DQR20/30-570	30	20	570
DQRF20/30-570	30	20	570
DQR22/30-630	30	22	630
DQRF22/30-630	30	22	630
DQR24/30-690	30	24	690
DQRF24/30-690	30	24	690
DQR26/30-750	30	26	750
DQRF26/30-750	30	26	750
DQR28/30-810	30	28	810
DQRF28/30-810	30	28	810
DQR30/30-870	30	30	870
DQRF30/30-870	30	30	870
DQR32/30-930	30	32	930
DQRF32/30-930	30	32	930

DQR / DQRF Waterproof Safety Light Curtain — 40 mm beam pitch, 30 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR04/40-120	40	4	120
DQRF04/40-120	40	4	120
DQR06/40-200	40	6	200
DQRF06/40-200	40	6	200
DQR08/40-280	40	8	280
DQRF08/40-280	40	8	280
DQR10/40-360	40	10	360
DQRF10/40-360	40	10	360
DQR12/40-440	40	12	440
DQRF12/40-440	40	12	440
DQR14/40-520	40	14	520
DQRF14/40-520	40	14	520
DQR16/40-600	40	16	600
DQRF16/40-600	40	16	600
DQR18/40-680	40	18	680
DQRF18/40-680	40	18	680
DQR20/40-760	40	20	760
DQRF20/40-760	40	20	760
DQR22/40-840	40	22	840
DQRF22/40-840	40	22	840
DQR24/40-920	40	24	920
DQRF24/40-920	40	24	920
DQR26/40-1000	40	26	1000
DQRF26/40-1000	40	26	1000
DQR28/40-1080	40	28	1080
DQRF28/40-1080	40	28	1080
DQR30/40-1160	40	30	1160
DQRF30/40-1160	40	30	1160
DQR32/40-1240	40	32	1240
DQRF32/40-1240	40	32	1240

DQR / DQRF Waterproof Safety Light Curtain — 80 mm beam pitch, 30 standard models
Model	Beam pitch K (mm)	Number of beams N	Protective height H (mm)
DQR04/80-240	80	4	240
DQRF04/80-240	80	4	240
DQR06/80-400	80	6	400
DQRF06/80-400	80	6	400
DQR08/80-560	80	8	560
DQRF08/80-560	80	8	560
DQR10/80-720	80	10	720
DQRF10/80-720	80	10	720
DQR12/80-880	80	12	880
DQRF12/80-880	80	12	880
DQR14/80-1040	80	14	1040
DQRF14/80-1040	80	14	1040
DQR16/80-1200	80	16	1200
DQRF16/80-1200	80	16	1200
DQR18/80-1360	80	18	1360
DQRF18/80-1360	80	18	1360
DQR20/80-1520	80	20	1520
DQRF20/80-1520	80	20	1520
DQR22/80-1680	80	22	1680
DQRF22/80-1680	80	22	1680
DQR24/80-1840	80	24	1840
DQRF24/80-1840	80	24	1840
DQR26/80-2000	80	26	2000
DQRF26/80-2000	80	26	2000
DQR28/80-2160	80	28	2160
DQRF28/80-2160	80	28	2160
DQR30/80-2320	80	30	2320
DQRF30/80-2320	80	30	2320
DQR32/80-2480	80	32	2480
DQRF32/80-2480	80	32	2480

28 standard models at 10 mm pitch · 204 across the series. Protective height is derived as H = (N − 1) × K. Intermediate beam counts can usually be built to order — send the opening height you need to cover.

How to read the DQR model code

DQR [F] [beams]/[pitch] - [protected height] [output groups] [signal] [sensing distance] [special mark]

DQR = series (waterproof safety light curtain). [F] = optional letter: fits a waterproof outer enclosure, raising protection from IP65 (default, no F) to IP68 -- the catalog calls this an IP68 "special customization" (超强IP68级防水特殊定制), i.e. DQRF is not a routine catalog SKU. [beams] = 04, 06, 08 ... 32. [pitch] = 10/14/20/25/30/40/80 mm (photocell spacing, labeled K on the outline drawing). [protected height] in mm = pitch x (beams - 1). [output groups] = blank for one group (default, usually left unmarked), 2 for two groups. [signal] = A (NPN NC), B (PNP NC), C (NPN NO), D (PNP NO). [sensing distance] = A (0.3-3 m, default) or B (0.3-6 m); the catalog notes that any distance beyond the default requires contacting customer service. [special mark] = blank unless a special/custom variant. Catalog example: DQRF08/40-280 2 D A = F-suffix waterproof-enclosure version, 8 beams, 40 mm pitch, 280 mm protected height, two output groups, PNP NO signal, 0.3-3 m sensing distance.

How to Select

Choose the protection level by exposure: standard DQR (IP65) for general indoor humid/splash areas; DQRF (waterproof enclosure, IP68) for washdown, outdoor, or higher waterproofing needs.
Choose beam pitch by required detection accuracy: 10mm for finger-level protection, 20-40mm for hand/arm-level protection, 80mm for large-opening perimeter guarding -- finer pitch requires more beams for the same protective height.
Choose protective height by the machine opening or hazard-zone height, using the model list for the beam-pitch tier that covers 50mm to 2480mm.
Output is PNP transistor per the catalogue; confirm the exact NPN/PNP and NO/NC order-code options with the factory before ordering.
Wiring is transmitter 4-core / receiver 5-core or dual 7-core; confirm the exact connector specification with the factory.
DQF-07 mounting brackets are included as standard -- DQR uses top/bottom mounting, DQRF uses two-end mounting.

📘 Need the full method? How to Choose a Safety Light Curtain · Type 2 vs Type 4 Safety Light Curtains

When NOT to specify the DQR — and what to use instead

Dry indoor guarding with no splash, washdown or humidity exposure

Why not: DQR's waterproof housing -- IP65 standard, or the IP68 waterproof-enclosure special order (DQRF) -- is built and priced for wet/splash duty; a dry indoor cell does not need that added protection or cost.

Use instead: The standard-range DQC safety light curtain for typical dry indoor machine guarding.

Continuous submersion, high-pressure steam, or hot high-pressure washdown jetting

Why not: The catalog's own default rating is IP65; the F-suffix upgrade reaches IP68 as a stated "special customization," but no IP69K (high-pressure, high-temperature jet) rating or submersion rating is documented in this catalog section.

Use instead: Confirm the exact wash regime (pressure, temperature, duration, submersion) with the factory before specifying DQR/DQRF; do not assume performance beyond the stated IP65/IP68 figures.

Need a guaranteed minimum-detectable-object size at the 80 mm beam pitch

Why not: The DQR base parameter table publishes detection accuracy for the 10/14/20/25/30/40 mm pitches (18/22/28/33/38/48 mm) but does not state a figure for the 80 mm pitch.

Use instead: Confirm the exact 80 mm-pitch detection accuracy with the factory before specifying it for a task with a defined minimum-object-size requirement.

Transmitter-to-receiver span beyond 0.3-6 m

Why not: DQR's published sensing/detection distance is 0.3-3 m by default (model code A) or 0.3-6 m (code B); the catalog explicitly says exceeding this needs a customer-service consultation, so it is not an off-the-shelf long-range option.

Use instead: The DQA long-distance safety light curtain, which is selectable up to 0.3-40 m, for wider transmitter-receiver spans.

Protected height needs more than 32 beam axes at the required pitch

Why not: DQR model numbers in the catalog's 规格一览表 (spec list) cap out at 32 beams per pitch.

Use instead: Consult the factory for a taller DQR/DQRF configuration, or consider the DQT series (up to 72 axes) if long-range reach matters more than waterproofing for that application.

Ambient temperature outside -10 to +40 degrees C, or condensing conditions

Why not: The DQR operating range is -10 to +40 degrees C, non-condensing. Outside that band, or where the optical faces can condense or ice over, detection is not guaranteed even with the waterproof housing.

Use instead: A heated or climate-controlled enclosure that keeps the curtain within its rated operating range, or confirm a wide-temperature option with the factory.

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Detection accuracy (minimum detectable object) for the 80 mm beam pitch is not stated in the DQR base parameter table (only the 10-40 mm pitches list explicit values).
Exact scope, certificate numbers, and issue dates of the TUV and UL listings referenced on the DQR performance-feature page. Certification documents are available on request.
PFHd, MTTFd and DCavg figures for a full ISO 13849-1 Category 4 machine-level calculation; the catalog cites Cat.4/Pld and EN 61496-3:2019 Type 4 as design references but does not publish these numbers for DQR.
Precise ingress-protection test standard and duration behind the IP68 (DQRF, F-suffix) waterproof-enclosure option, since the catalog calls it a "special customization" rather than a standard catalog-tested IP68 rating.
Whether IP68 (DQRF) covers continuous submersion, and whether any IP69K (high-pressure, high-temperature washdown) rating exists -- not stated in this catalog section.
Exact cable length options and the M12 aviation-connector pinout for the 5-core/7-core cabling.
Whether sensing-distance code B (0.3-6 m) is available across all beam-pitch/beam-count combinations or only on special order — the published model list shows 0.3-3 m for every listed row
Difference between the DQCA and DQCA2 controllers, and which DQR/DQRF configurations require an external controller versus standalone operation.

Frequently Asked Questions

What is the difference between DQR and DQRF?

DQR is the standard waterproof safety light curtain rated IP65. DQRF is the same platform fitted with an additional waterproof enclosure, which raises the protection rating to IP68. The "F" suffix specifically denotes the waterproof-enclosure version.

What IP rating does the DQR series have?

The standard DQR model is rated IP65. When the waterproof enclosure is added (model becomes DQRF), the rating is IP68.

What beam-pitch (resolution) options are available?

Seven options: 10, 14, 20, 25, 30, 40, and 80mm, covering 4 to 32 beams depending on the pitch selected.

What is the protective height range?

Protective height ranges from 50mm to 2480mm across the full model range, varying by beam pitch and beam count -- see the model list for exact combinations.

What output type does DQR(F) use?

The catalogue wiring diagram documents PNP transistor output with transmitter 4-core / receiver 5-core / dual 7-core wiring. Please confirm the exact output configuration with the factory before ordering.

What mounting accessories are included?

DQF-07 top/bottom mounting brackets are supplied as standard with DQR; the DQRF (waterproof enclosure) version uses the same bracket for two-end mounting.

What environments is DQR(F) designed for?

It is positioned in the catalogue as the waterproof series within the product line, intended for coolant/cutting-fluid splash, water washdown, and humid production environments -- conditions where a standard indoor-rated light curtain would not be suitable.

How does DQR compare to the standard DQC series?

DQR and DQC share a similar structural range of beam-pitch and beam-count options, but DQR is the series specifically positioned for wet/splash/washdown/outdoor conditions, while DQC targets standard dry indoor environments.