JER Economical Safety Light Curtain (Optical Synchronization)

Name: JER Economical Safety Light Curtain (Optical Synchronization)
Brand: DAIDISIKE
SKU: jer-economical-safety-light-curtain
Availability: InStock

Economical through-beam safety light curtain using optical synchronization (no interconnecting sync cable between transmitter and receiver), in 4 beam pitches (10, 14, 20 and 40 mm) with up to 200 beams and a protected height up to 7960 mm. NPN/PNP transistor output, DC12/24V supply, IP65 housing.

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JER Economical Safety Light Curtain (Optical Synchronization) - product photo

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Technical Specifications

Curtain Type	Through-beam (opposed mode) — separate transmitter and receiver, optically synchronized (no interconnecting sync cable)
Safety Design Basis	Designed to the safety level of IEC 61496-1/-2, per the DAIDISIKE catalog, which also cites TUV CE certification. Certification documents are available on request.
Synchronization	Optical sync (光同步) between transmitter and receiver — no dedicated sync wire, which the catalog says simplifies wiring and cuts installation time
Beam Pitch	10 / 14 / 20 / 40 mm (4 pitch steps)
Detection Accuracy (min. detectable object)	18 / 22 / 28 / 48 mm respectively (= beam pitch + 8 mm)
Number of Beams	8, 10 ... 200 (10 mm pitch); 8, 10 ... 200 (14 mm pitch); 6, 8 ... 200 (20 mm pitch); 4, 6 ... 200 (40 mm pitch). Catalog footnote: special orders up to 200 beams max on any pitch.
Protected Height	Beam pitch x (number of beams - 1). Catalog-listed range: 70-1990 mm (10 mm), 98-2786 mm (14 mm), 100-3980 mm (20 mm), 120-7960 mm (40 mm).
Curtain Overall Length	= P + H + J + 12 + 12 mm (H = protected height). P = 5 mm at 10/14 mm pitch, 10 mm at 20/40 mm pitch; J = 10 mm at all pitches.
Sensing / Detection Distance	0.3-3 m by default (code A) on every catalog-listed model; code B = 0.3-6 m is also defined, but the catalog states any distance beyond the 0.3-3 m default must be confirmed with customer service. Base configurations 30-3000 mm / 30-6000 mm.
Response Time	<= 15 ms
Ambient Light Immunity	10,000 lux (incidence angle >= 5 degrees); catalog states the system effectively shields about 99% of interference signals (electromagnetic noise, strobe lighting, welding arc light and similar sources)
Dimensions	29.3 x 29.3 mm x L (L = transmitter / receiver length)
Enclosure Rating	IP65
Controller	DQCA / DQCA2
Supply Voltage	DC 12/24 V; AC 110-220 V (relay-output version) is listed in the catalog's technical-parameter table, but no relay ('J') output code appears in the JER model-code diagram — see dataGaps
Current Consumption	<= 200 mA
Output	NPN / PNP transistor, sink current 500 mA, residual voltage < 1.5 V, with polarity, short-circuit and overload protection. Signal-output code selectable: N (NPN, NO/NC), 2NC (dual NPN, NC), 2NO (dual NPN, NO), P (PNP, NO/NC), 2PC (dual PNP, NC), 2PO (dual PNP, NO)
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 with dedicated cable; transmitter 3-core, receiver 5-core. Optional M12 aviation-socket interface via the 29.3 x 29.3 mm housing.
Housing Material	Aluminium alloy; end caps ABS-reinforced nylon
Ambient Light Tolerance	Incandescent light: 3,000 lux at receiver face; sunlight: 10,000 lux at receiver face
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
Standard / Optional Accessories	JER-08 two-end mounting bracket and DQCA-02 T-screw ship standard; DQCA-01 stainless-steel pipe bracket and DQCA-03 raised-nut bracket are optional

Overview

The JER is DAIDISIKE's economical through-beam (opposed-mode) safety light curtain: a separate transmitter and receiver bar that project a plane of modulated infrared beams across a machine opening. What sets JER apart from the rest of the range is optical synchronization (光同步技术) between the two bars — there is no interconnecting sync cable to route between transmitter and receiver, which the catalog says keeps wiring simple and cuts installation time. The catalog positions JER as a compact, low-cost, easy-to-install option ("体积小巧，安装调试方便，配线简单，外形美观，超高性价比") for presses, hydraulic and oil presses, shearing machines, automatic doors and other machinery, able to detect any opaque object passing through the curtain that is larger than its resolution.

JER is offered in four beam pitches — 10, 14, 20 and 40 mm — a narrower lineup than the full 8-step (10-200 mm) pitch range on DAIDISIKE's DQC/DQA series, consistent with its economical positioning. Beam count runs from as few as 4-8 (depending on pitch) up to 200 per unit, giving protected heights from 70 mm up to 7960 mm at the 40 mm pitch. The catalog states the design is built to the safety level of IEC 61496-1/-2 and also references a TÜV CE marking; certification documents are available on request.

Output is NPN or PNP transistor, single or dual signal, wired via the transmitter's 3-core and receiver's 5-core aviation connector, with an optional M12 aviation-socket interface on the 29.3 x 29.3 mm housing. The housing is rated IP65, self-checks continuously with polarity/short-circuit/overload protection, responds in <=15 ms, and the catalog says it shields about 99% of interference signals (electromagnetic noise, strobe lighting, welding arc light and similar ambient sources) and tolerates ambient light up to 10,000 lux at an incidence angle of 5 degrees or more.

Key Facts — JER at a glance

The JER series synchronizes optically between transmitter and receiver (光同步技术) — there is no interconnecting sync cable to run between the two bars, which the catalog says simplifies wiring and cuts installation time.
JER's beam pitch comes in four steps — 10, 14, 20 and 40 mm — each with a corresponding detection accuracy (minimum detectable object) of 18, 22, 28 and 48 mm respectively (pitch + 8 mm).
JER's protected height equals beam pitch x (number of beams - 1); the catalog's model list runs from 70 mm (10 mm pitch, 8 beams) up to 7960 mm (40 mm pitch, 200 beams), with the footnote that beam count can be special-ordered up to 200 on any pitch.
JER's response time is <=15 ms, it rejects ambient light up to 10,000 lux at an incidence angle of >=5 degrees, and the catalog states it shields about 99% of interference signals (electromagnetic noise, strobe lighting, welding arc light).
JER's default sensing/detection distance is 0.3-3 m; the catalog's spec table lists this as the default for every model and notes that any distance beyond default must be confirmed with customer service.
JER runs on DC12/24 V, drawing <=200 mA, with NPN or PNP transistor output (500 mA sink current, residual voltage under 1.5 V, polarity/short-circuit/overload protection), housed in a 29.3 x 29.3 mm aluminium body rated IP65.
JER ships standard with JER-08 two-end mounting brackets, and its 29.3 x 29.3 mm housing also accepts an optional M12 aviation-connector cable interface, per the catalog.

Features & Benefits

Optical Synchronization — No Interconnecting Cable

The emitter and receiver synchronize via light, not wire, so each side only needs its own local power connection. This eliminates the cable trays, drag chains, or conduit runs that would otherwise have to cross the protected opening.

NPN/PNP Selectable Transistor Output

Transistor output is selectable as NPN or PNP, so the curtain wires directly into either input architecture on the customer's existing PLC or controller without an interposing relay.

Minimal 3-Wire or 5-Wire Hookup

Each side is wired with only 3 or 5 wires. Combined with the absence of a cross-cable, this keeps on-site wiring work low compared with curtains that need both power wiring and a separate sync line.

Up to 200 Beams, 7960mm Protective Height

Four beam pitches (10/14/20/40mm) and beam counts up to 200 give protective heights from 70mm up to 7960mm at the 40mm pitch — near-8-meter coverage from an entry-level series.

DC 12/24 V Supply

Tolerates typical factory-floor supply fluctuation without needing a dedicated regulated power supply.

IP65 Housing with Standard End-Mounting Brackets

The IP65-rated housing resists dust and low-pressure water jets from any direction. JER-08 end-mounting brackets and the DQCA-02 T-screw ship as standard; DQCA-01 and DQCA-03 are optional accessories.

Applications

Conveyor-Crossing Point Guarding — Optical synchronization removes the need to route a sync cable above or below the conveyor line, since each side only needs local power.

Cross-Aisle / Walkway Opening Protection — Each side wires to its own power source, so no cable has to cross the walkway to link emitter and receiver.

Retrofit Protection on Existing Production Lines — Older lines often lack pre-installed cable trays or conduit; optical synchronization avoids cutting new wireways to add guarding.

Budget-Constrained Batch Machine Installation — The economical positioning combined with simplified wiring lowers the overall installed cost across a batch of machines.

Machine Tool / Packaging Machine Opening Detection — Pitch options from 10-40mm and multiple protective heights match common opening sizes on machine tools and packaging equipment.

General Entry/Exit Access Point Safeguarding — NPN/PNP transistor output makes it straightforward to wire into common PLC safety input circuits on automated equipment.

Models & Ordering Information

10 mm Pitch

JER10-08 70NAJER10-200 1990NA

Beam count from 8 to 200 (step 2); protected height (mm) = (beam count - 1) x 10. Curtain overall length adds P=5mm + J=10mm + 12mm + 12mm to the protected height.

14 mm Pitch

JER14-08 98NAJER14-200 2786NA

Beam count from 8 to 200 (step 2); protected height (mm) = (beam count - 1) x 14. Curtain overall length adds P=5mm + J=10mm + 12mm + 12mm to the protected height.

20 mm Pitch

JER20-06 100NAJER20-200 3980NA

Beam count from 6 to 200 (step 2); protected height (mm) = (beam count - 1) x 20. Curtain overall length adds P=10mm + J=10mm + 12mm + 12mm to the protected height.

40 mm Pitch

JER40-04 120NAJER40-200 7960NA

Beam count from 4 to 200 (step 2); protected height (mm) = (beam count - 1) x 40. Curtain overall length adds P=10mm + J=10mm + 12mm + 12mm to the protected height.

How to read the JER model code

JER [pitch K] - [beam count n] [protected height H][signal output][sensing distance][special mark]

JER = series. [pitch K] = 10, 14, 20 or 40 mm. [beam count n] = 04, 06, 08 ... 200, depending on pitch (minimum 8 for 10/14 mm pitch, 6 for 20 mm, 4 for 40 mm; catalog footnote: special orders can go up to 200 beams on any pitch). [protected height H] in mm = (n - 1) x K. [signal output] = N (NPN, NO/NC), 2NC (dual NPN, NC), 2NO (dual NPN, NO), P (PNP, NO/NC), 2PC (dual PNP, NC), 2PO (dual PNP, NO). [sensing distance] = A (0.3-3 m, the default) or B (0.3-6 m). [special mark] = blank unless a special/custom spec. Example: JER20-10 180NA = 20 mm pitch, 10 beams, 180 mm protected height, N-type output, 0.3-3 m sensing distance.

Mounting Accessories

DQCA-01DQCA-02DQCA-03JER-08

Per the catalog's JER accessory selection guide: JER-08 upper/lower right-angle brackets (used for JER two-end mounting) and DQCA-02 T-screws ship standard; DQCA-01 stainless-steel pipe brackets (for tubular mounting) and DQCA-03 raised-nut brackets (for side slide-groove mounting) are optional.

How to Select

Choose 10mm pitch when you need to detect finger-sized objects; beam counts run 08-200 (step 2), giving protective heights of 70-1990mm.
Choose 14mm pitch for beam counts 08-200 (step 2), giving protective heights of 98-2786mm.
Choose 20mm pitch for beam counts 06-200 (step 2), giving protective heights of 100-3980mm.
Choose 40mm pitch when you need to detect arm/body-sized objects across a large opening; beam counts run 04-200 (step 2), giving protective heights up to 7960mm.
Match the output type (NPN or PNP) to your PLC's input card to avoid adding a conversion relay.
Optical synchronization matters most where running a sync cable between the two housings is difficult or costly; where cable routing is already available, compare pricing against other series.
Choose 3-wire wiring for basic switching output needs, or 5-wire where additional terminals/signals are required.
Body cross-section is 29.3 x 29.3mm with JER-08 end-mounting brackets included as standard; confirm whether DQCA-01/02/03 accessories suit your mounting angle/position.
Model numbers follow JER{pitch}-{beam count} {protected height}{signal output}{sensing distance}, e.g. JER20-10 180NA = 20 mm pitch, 10 beams, 180 mm protected height, N-type output, 0.3-3 m sensing distance; protected height = (beam count - 1) x pitch. Use this formula to work out the beam count you need, or pick directly from the model list by protected height.

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

You need a beam pitch other than 10, 14, 20 or 40 mm (e.g. 25, 30, 80 or 200 mm)

Why not: JER's economical lineup is limited to four pitch steps, a narrower set than the full 8-step (10-200 mm) pitch range offered on the standard-range DQC and long-range DQA series.

Use instead: DQC (standard-range) or DQA (long-range) for the additional 25/30/80/200 mm pitch options.

You need a sensing/detection distance beyond 0.3-3 m as a routinely available option

Why not: Every catalog-listed JER model defaults to a 0.3-3 m sensing distance; a 0.3-6 m code (B) is defined in the model code, but the catalog explicitly says any distance beyond the 0.3-3 m default has to be confirmed with customer service rather than ordered off the standard list.

Use instead: Confirm 0.3-6 m (or longer) availability and lead time with us before specifying, or consider DQA, whose model code lists up to eight distance steps (0.3-3 m through 0.3-40 m) as catalog-listed options.

The machine control needs a volt-free relay output

Why not: Every signal-output code in the JER model-code diagram (N, 2NC, 2NO, P, 2PC, 2PO) is transistor-based (NPN or PNP). The catalog's technical-parameter table separately lists an AC110-220V 'relay-output' supply option, but no relay output code appears in the JER model-code diagram itself, so relay-output availability for JER is unconfirmed.

Use instead: Specify DQA or DQC, whose model code includes a dedicated relay ('J') output option, or confirm relay-output availability for JER with us first.

Washdown, high-pressure hosing or wet outdoor environments

Why not: The JER housing is rated IP65 — dust-tight and protected against low-pressure water jets, but not against high-pressure jetting or immersion.

Use instead: The DQR waterproof safety light curtain series for wet or washdown areas.

You need true 14 mm finger-detection capability

Why not: JER's finest pitch is 10 mm, but its detection accuracy — the minimum object it reliably detects — is 18 mm (pitch + 8 mm), a hand-level rather than a strict 14 mm finger-detection figure, even though the catalog groups the 10 mm pitch under finger protection (手指保护).

Use instead: Confirm the required detection capability against your ISO 13855 risk assessment; ask us for a finer-resolution series if 14 mm finger detection is mandatory.

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

Why not: JER's operating range is -10 to +40 degrees C, non-condensing. Outside that band, or where the optical faces can condense or ice, detection is not guaranteed.

Use instead: A heated or sheltered enclosure that holds the curtain within spec, or confirm a wide-temperature option with us.

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.

PFHd, MTTFd and DCavg figures, and any Type/Category classification under IEC 61496 or ISO 13849-1 — the catalog states only 'IEC 61496-1/-2 standard safety level' for JER without a Type or Category number.
TUV CE certificate number and the exact scope (which JER models/configurations it covers). Certification documents are available on request.
Safety-distance calculation guidance (ISO 13855) and the exact response time per beam count — the catalog gives only the <= 15 ms maximum.
Whether an AC110-220V relay-output JER variant is actually orderable: the technical-parameter table lists this supply option, but the model-code diagram's signal-output codes are all transistor-based (N/2NC/2NO/P/2PC/2PO) with no relay code shown.
Whether the 0.3-6 m sensing-distance code (B) is a standard catalog option or requires special ordering — the spec-table footnote only says distances beyond the 0.3-3 m default require contacting customer service.
Cable length options and the pinout for the standard aviation connector and the optional M12 aviation-socket interface.
Muting and fixed/floating blanking function availability — not mentioned anywhere in the JER catalog pages.
Whether beam counts below the catalog's listed minimum (e.g. below 8 at 10/14 mm pitch, below 6 at 20 mm, below 4 at 40 mm) or odd-numbered beam counts can be special-ordered.

Frequently Asked Questions

Does the JER series require a cable between the emitter and receiver for synchronization?

No. JER uses optical synchronization — the emitter and receiver synchronize via a light signal, not a physical wire, so each unit only needs its own local power connection.

What output types does JER support?

JER provides transistor output, selectable as NPN or PNP, to match different PLC input architectures.

How many wires does each JER unit need?

Each side is wired with either 3 wires or 5 wires, depending on the model/configuration selected, in addition to the optical (wireless) synchronization between emitter and receiver.

What beam pitches (resolutions) are available in the JER series?

Four pitches: 10mm, 14mm, 20mm, and 40mm.

What is the maximum protective height available in the JER series?

Up to 7960mm, available at the 40mm pitch with 200 beams (model JER40-200 7960NA).

What is the maximum number of beams in a single JER unit?

Up to 200 beams, available across the 10mm, 14mm, 20mm, and 40mm pitch options.

What power supply does JER require?

DC 12/24V. The catalog's technical-parameter table also lists an AC110-220V relay-output supply option, but availability of a relay-output JER variant is unconfirmed (see dataGaps).

What is the ingress protection (IP) rating of the JER housing?

IP65.

What is the JER housing's cross-sectional dimension?

29.3 x 29.3mm.

What mounting accessories come standard with JER?

JER-08 upper/lower right-angle end-mounting brackets and DQCA-02 T-screws ship standard; DQCA-01 stainless-steel pipe brackets and DQCA-03 raised-nut brackets are optional.

How is a JER model number structured?

JER{pitch}-{beam count} {protected height}{signal output}{sensing distance} — for example JER10-08 70NA is a 10mm-pitch, 8-beam unit with a 70mm protected height, N-type output and 0.3-3m sensing distance. Protected height equals (beam count − 1) x pitch.

What certifications does JER carry?

Certification documents are available on request.

Works Well Together

On the same machine or line, JER is typically ordered together with: Safety Relays · Safety Door Locks & Switches · Press & Press Brake Protection

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