MK Mini Economical Safety Light Curtain

Name: MK Mini Economical Safety Light Curtain
Brand: DAIDISIKE
SKU: mk-mini-economical-safety-light-curtain

Economical mini safety light curtain in a 25 x 23 mm housing: four beam pitches (10/14/20/40 mm), 8 to 200 beams, protected height to 7960 mm, NPN/PNP transistor output and response time <=15 ms. Designed to the safety levels of IEC 61496-1/-2.

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Technical Specifications

Curtain Type	Through-beam (opposed mode) -- separate transmitter and receiver
Safety Design Basis	Catalog states compliance with the safety level of IEC 61496-1/-2, with TUV CE referenced in the catalog. Certification documents are available on request.
Beam Pitch	10 / 14 / 20 / 40 mm
Detection Accuracy (min. detectable object)	18 / 22 / 28 / 48 mm (= beam pitch + 8 mm)
Number of Beams	8, 10 ... 200 (10 mm pitch); 6, 8 ... 200 per the parameter table, printed model list starts at 8 (14 mm pitch); 6, 8 ... 200 (20 mm pitch); 4, 6 ... 200 (40 mm pitch)
Protected Height	Beam pitch x (number of beams - 1); from 70 mm (MK10-08-70NA) up to 7960 mm (MK40-200-7960NA)
Sensing Distance	Catalogue lists 0.3-3 m standard and 0.3-6 m special order; legacy 30-3000 / 30-6000 mm text conflicts at the lower limit. Confirm the exact ordered version's minimum sensing distance.
Response Time	<= 15 ms
Ambient Light Immunity	10,000 lux (incidence angle >= 5 degrees)
Dimensions	25 x 23 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 line item -- see dataGaps)
Current Consumption	<= 200 mA
Output	NPN / PNP type, 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; wiring diagram documents transmitter 3-core / receiver 5-core (the technical parameter table separately states transmitter 4-core -- see dataGaps)
Housing Material	Aluminium alloy; end caps ABS-reinforced nylon
Ambient Light Tolerance	Incandescent: 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

Overview

MK is DAIDISIKE's economical mini-profile safety light curtain: a transmitter/receiver pair in a 25 x 23 mm aluminium-alloy housing (end caps ABS-reinforced nylon), aimed at machines where installation space is tight and per-unit cost matters. The catalog states it complies with the safety level of IEC 61496-1/-2, with TUV CE referenced in the catalog; certification documents are available on request. It is built for automated equipment, presses, hydraulic and oil presses, automatic doors and similar machinery.

MK is offered in four beam pitches -- 10, 14, 20 and 40 mm -- with a corresponding detection accuracy (minimum detectable object) of 18, 22, 28 and 48 mm (pitch + 8 mm). Beam count runs from as few as 4-8 (depending on pitch) up to 200, giving protected heights from 70 mm up to 7960 mm at the largest 40 mm-pitch, 200-beam configuration (MK40-200-7960NA). The catalogue states a 0.3-3 m standard sensing range and a 0.3-6 m special-order option. Its separate millimetre figures disagree at the lower limit; confirm the exact model's minimum distance before specifying.

Output is NPN or PNP transistor, selected via a signal-output code (N, 2NC, 2NO, P, 2PC or 2PO for single or dual NO/NC signals), with sink current 500 mA, residual voltage under 1.5 V, and polarity, short-circuit and overload protection. The catalog's wiring diagram documents 3-core transmitter / 5-core receiver cabling via a circular aviation connector, though the catalog's own technical-parameter table separately states a 4-core transmitter -- see the data gaps below. Response time is <=15 ms, the housing is rated IP65, and the unit tolerates ambient light to 10,000 lux at an incidence angle of 5 degrees or more. Dedicated miniature brackets (MK-01, MK-02) and the common DQCA-01/02/03 accessories are available for mounting.

Key Facts — MK at a glance

The MK Mini Economical Safety Light Curtain has a housing cross-section of 25 x 23 mm (transmitter/receiver), per the catalog's outline-dimension drawing and technical parameter table.
MK offers four beam pitches -- 10, 14, 20 and 40 mm -- with a corresponding detection accuracy (minimum detectable object) of 18, 22, 28 and 48 mm respectively (pitch + 8 mm).
MK's catalogue states a 0.3-3 m default and a 0.3-6 m special-order option. The legacy 30-3000 / 30-6000 mm entries are not equivalent at the lower limit: 0.3 m is 300 mm. Obtain the confirmed minimum distance for the actual order.
MK response time is <=15 ms, and it tolerates ambient light up to 10,000 lux at an incidence angle of 5 degrees or more (3,000 lux incandescent / 10,000 lux sunlight measured at the receiver face).
MK output is NPN or PNP transistor, selectable via a signal-output code (N, 2NC, 2NO, P, 2PC, 2PO), with sink current 500 mA, residual voltage under 1.5 V, and polarity, short-circuit and overload protection.
MK runs on DC 12/24 V, or AC 110-220 V on the relay-output line item in the supply-voltage row, drawing 200 mA or less, in an IP65-rated housing over an operating range of -10 to +40 degrees C (non-condensing).
The largest catalog-listed MK configuration is 200 beams at 40 mm pitch (MK40-200-7960NA), giving a 7960 mm protected height; the printed model-list tables run up to 200 beams at 10, 14 and 20 mm pitch as well.

Features & Benefits

One of the Smallest Housing Cross-sections in the Range (25 x 23 mm)

Fits benchtop machines, compact tooling, and tight workstations where a standard-size light curtain would not fit or would look oversized.

Up to 200 Beams and Protective Heights to 7960 mm

Coverage capability is not compromised for cost: the 40 mm-pitch series reaches MK40-200-7960NA, among the tallest protective heights across the light curtain lineup.

Four Beam-pitch Options (10/14/20/40 mm)

The 10/14/20/40 mm pitches correspond to published minimum detectable objects of 18/22/28/48 mm. Select by those detection values and the exact-model safety documentation, not a pitch-only finger/body label.

Simple 3-core or 5-core Wiring for Fast Installation

Fewer wiring cores reduce on-site cabling work, which matters most on volume machine-building projects.

NPN/PNP Selectable Transistor Output

A signal output selection table lets integrators match the output polarity to their control system without swapping hardware.

Fast Response Time (≤15 ms)

Response speed is specified across the standard 0.3-3 m sensing range (0.3-6 m on special order), for timely stop-signal triggering.

Dedicated Miniature Mounting Brackets

MK-01 (side mounting) and MK-02 (top/bottom mounting) are purpose-built for the 25 x 23 mm profile, in addition to compatibility with the common DQCA-01/02/03 bracket series.

Applications

Benchtop and Compact Automation Machine Guarding — The 25 x 23 mm cross-section fits benchtop and small automation equipment where a standard-size light curtain would not fit or would look oversized.

3C / Electronics Assembly Workstation Hand Protection — Fine-pitch (10/14 mm) versions provide precise hand protection at compact, fast-cycle electronics assembly workstations without consuming excess installation space.

Volume OEM Machine-building Projects with Tight Per-unit Cost Targets — The economical positioning plus simple 3-core wiring lowers per-unit cost and wiring labor on volume machine-building projects.

Large Protective-height Guarding on a Limited Budget — Up to 200 beams and protective heights to 7960 mm let the economical series also cover large-opening guarding, such as warehouse or logistics equipment openings.

Retrofit Protection on Legacy Small Machines with Restricted Mounting Space — The mini cross-section allows retrofitting onto existing machine structures without major frame modification.

General-purpose Access-point Guarding for Compact Production Cells — Wide-pitch (20/40 mm) versions suit body- and access-level guarding for material or personnel passageways in compact production cells.

Models & Ordering Information

10 mm Pitch

MK10-08-70NAMK10-200-1990NA

Beam count 8 to 200 (even steps); protected height (mm) = beam count x 10 - 10. The printed model-list table's two highest rows (198, 200 beams) are misprinted with a 'JER10-' prefix instead of 'MK10-' in the source catalog -- shown here per the decode formula; see dataGaps.

14 mm Pitch

MK14-08-98NAMK14-200-2786NA

The printed model-list table runs beam count 8 to 200 (even steps); the technical parameter table separately lists 6 as an available starting beam count for this pitch -- see dataGaps. Protected height (mm) = beam count x 14 - 14.

20 mm Pitch

MK20-06-100NAMK20-200-3980NA

Beam count 6 to 200 (even steps); protected height (mm) = beam count x 20 - 20.

40 mm Pitch

MK40-04-120NAMK40-200-7960NA

Beam count 4 to 200 (even steps); protected height (mm) = beam count x 40 - 40.

Mounting Accessories

MK-01MK-02DQCA-01DQCA-02DQCA-03

Per the catalog's accessory selection guide: MK-01 is a side right-angle bracket (optional) for fixing to the side of the MK housing. MK-02 is a screw set (optional) for side, or front top/bottom hole-position, mounting. DQCA-01 is a stainless-steel tube bracket (optional; for pole/tube mounting; bracket length 400/500/600/700/800/1000 mm optional). DQCA-02 is a T-bolt set (standard equipment; for side slide-groove mounting). DQCA-03 is a raised-nut set (optional; for side slide-groove mounting).

How to read the MK model code

MK [pitch] - [beam count] - [protected height][output][sensing distance][special mark]

MK = series. [pitch] = 10 / 14 / 20 / 40, the beam pitch in mm (光轴间距). [beam count] = 2-digit beam count (光束数), per pitch: 8-200 (10 mm), 6 or 8 to 200 (14 mm, see dataGaps), 6-200 (20 mm), 4-200 (40 mm). [protected height] in mm (保护高度) = pitch x (beam count - 1). [output] (信号输出方式) = N (NPN, NO/NC selectable), 2NC (dual NPN, both NC), 2NO (dual NPN, both NO), P (PNP, NO/NC selectable), 2PC (dual PNP, both NC), 2PO (dual PNP, both NO). [sensing distance] (检测距离) = A (0.3-3 m, standard) or B (0.3-6 m, special order). [special mark] (特殊标示) = blank box reserved for custom/special specification. Worked example from the catalog: MK20-06-100NA = 20 mm pitch, 6 beams, 100 mm protected height ((6-1) x 20), N (NPN) output, 0.3-3 m sensing distance.

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How to Select

Model code = MK + pitch (10/14/20/40) + "-" + beam count (2 digits) + "-" + protected height (mm) + output code + sensing-distance code; protected height = pitch x (beam count - 1). Example: MK20-06-100NA = 20 mm pitch, 6 beams, 100 mm protected height, NPN output, 0.3-3 m sensing distance.
Confirm whether the installation gap falls within the 0.3-3 m standard sensing range; the 0.3-6 m figure in the parameter table requires special-order confirmation with the factory.
Match NPN or PNP transistor output, and single- or dual-signal NO/NC logic, to your PLC's input circuit using the signal-output code table (N / 2NC / 2NO / P / 2PC / 2PO).
Choose using the required minimum detectable object: MK 10/14/20/40 mm pitches give published 18/22/28/48 mm detection capability. None is a 14 mm finger-detection configuration based on the listed values.
Pick the required protected height and pitch first, then find the matching beam-count model in the model-list table (e.g. MK10-08-70NA for a 70 mm height at 10 mm pitch).
Use MK-01 (side right-angle bracket) or MK-02 (screw set for side/front top-bottom hole mounting) for the dedicated miniature mounting options, or the common DQCA-01/02/03 bracket series if your equipment is already standardized on it.

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

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

You need finger detection finer than the catalog's minimum detectable object

Why not: MK's finest pitch is 10 mm, but its detection accuracy -- the minimum object it reliably detects -- is 18 mm (pitch + 8 mm), even though the catalog labels the 10/14 mm pitches as finger protection.

Use instead: Confirm the required detection capability against your ISO 13855 risk assessment before specifying; ask us if a finer-resolution option is needed.

Washdown, high-pressure hosing or wet/outdoor environments

Why not: The MK 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.

The transmitter-to-receiver span is beyond 0.3-6 m, or you cannot get the 0.3-6 m special order confirmed

Why not: MK's standard sensing distance is 0.3-3 m, and 0.3-6 m is listed in the parameter table only as a special-order item requiring factory confirmation. It is not built for long-range spans.

Use instead: The DQA long-distance series (selectable up to 0.3-40 m) or the DQT series for longer spans.

The opening needs more than 200 beams or a protected height taller than 7960 mm

Why not: MK's model list tops out at 200 beams per pitch (7960 mm at 40 mm pitch), matching its mini, economical positioning rather than large-format guarding.

Use instead: The standard-size DQC, long-range DQA, or DQT series, which are built for larger openings.

The machine control needs a confirmed volt-free relay output

Why not: The catalog's signal-output code table for MK (N, 2NC, 2NO, P, 2PC, 2PO) documents only NPN/PNP transistor outputs; a relay/volt-free code is not listed there, even though the supply-voltage row separately mentions an AC 110-220 V relay-output line item -- this needs factory confirmation before ordering.

Use instead: Confirm relay-output availability with the factory, or specify a series such as DQA/DQC that documents a relay (J) output code explicitly.

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

Why not: MK'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 the exact IEC 61496 Type / ISO 13849 Category level for MK -- the catalog only states compliance with the IEC 61496-1/-2 safety level and TUV CE, without the explicit Type/Category numbers given for other series.
TUV/CE certificate numbers and the exact scope (which MK models/configurations are covered). 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.
Exact order codes for the 198- and 200-beam 10 mm-pitch versions — ask us to confirm the model number before ordering
Whether MK actually offers a relay (volt-free) output: the supply-voltage row lists 'AC110-220V (relay output)' but the signal-output code list (N/2NC/2NO/P/2PC/2PO) documents only NPN/PNP transistor codes.
Minimum beam count for the 14 mm pitch: the technical parameter table lists 6 as an available starting beam count, but the printed per-model spec table begins at 8 beams for this pitch.
Whether the connection is transmitter 3-core / receiver 5-core (per the wiring diagram) or transmitter 4-core / receiver 5-core (per the technical parameter table) -- the two catalog pages disagree on the transmitter core count.
Muting and fixed/floating blanking function availability and configuration -- not covered on the MK catalog pages.
Cable length options and the aviation-connector pinout beyond the wire-color/function labels shown in the wiring diagram.

Frequently Asked Questions

What is the housing size of the MK safety light curtain?

The MK series has a housing cross-section of 25 x 23 mm, making it one of the smallest profiles in the safety light curtain range — sized for compact machines and benchtop equipment.

What beam pitches does the MK series offer?

MK is available in four beam pitches: 10, 14, 20 and 40 mm. The corresponding published minimum detectable objects are 18, 22, 28 and 48 mm. Confirm the exact-model documentation and protective function before selection.

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

The largest listed configuration is MK40-200-7960NA, offering a protective height of 7960 mm at 40 mm pitch with 200 beams.

What sensing (operating) range does the MK safety light curtain support?

The standard sensing range is 0.3-3 m; a 0.3-6 m special range is available on request.

What is the response time of the MK safety light curtain?

The response time is ≤15 ms.

What output type does the MK series use — NPN or PNP?

MK uses transistor output with both NPN and PNP options selectable per a signal output selection table, so it can be matched to different PLC input types.

How is wiring done on the MK series?

MK uses simple 3-core or 5-core wiring, which reduces on-site cabling work and speeds up installation, especially on volume machine builds.

How does the MK model naming code work?

The model number follows MK + pitch (mm) + "-" + beam count + "-" + protected height (mm) + output code + sensing-distance code, e.g. MK20-06-100NA (20 mm pitch, 6 beams, 100 mm protected height, NPN output, 0.3-3 m sensing distance), where protected height = pitch x (beam count - 1).

What mounting accessories are available for the MK series?

Per the catalog's accessory selection guide, MK-01 is a side right-angle bracket for fixing to the side of the MK housing, and MK-02 is a screw set for side or front top/bottom hole-position mounting. The common DQCA-01 (stainless-steel tube bracket), DQCA-02 (T-bolt set, standard equipment) and DQCA-03 (raised-nut set) accessories are also compatible.

How does MK differ from the JER economical series?

Both are economical-tier light curtains sharing the same four pitch options (10/14/20/40 mm). MK has a smaller housing cross-section (25 x 23 mm vs JER's 29.3 x 29.3 mm), while JER offers optical synchronization that eliminates the need for a sync cable. Choose MK for the smallest footprint; choose JER if cable-free synchronization is a priority.

Can DAIDISIKE provide certification documents for the MK series?

Certification documents are available on request.

Related Categories and Example Products

Explore other functions that may be needed in a machine or line. The products below are category examples, not pre-validated electrical or safety combinations. Confirm each interface and application separately: Safety Relays · Safety Door Locks & Switches · Press & Press Brake Protection

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