MK Economy Safety Light Curtain (ESPE)

Name: MK Economy Safety Light Curtain
Brand: DAIDISIKE
SKU: MK-SERIES

Cost-effective presence sensing safety device for general machinery and automation cells. Slim 25×23 mm body with resolutions 10/14/20/40 mm; standard sensing range 0.3–3 m (0.3–6 m optional); strong light immunity ≥10,000 Lux (incidence ≥ 5°); typical response time ≤ 15 ms; enclosure rating IP65. Dual-channel NPN/PNP outputs with 3/5-wire wiring examples and optical synchronization.

Finger/palm protection examples

Body/perimeter guarding

Compact 25×23 mm housing

Product Highlights

Optical sync between emitter/receiver — fewer cables, quick commissioning.
Resistant to interference: filtering and EMC design attenuate flicker, welding glare and ambient sources.
≤15 ms response accelerates stop distance calculations (ISO 13855) while maintaining protection.
≥10,000 Lux immunity; status LEDs for power/blocked states ease troubleshooting.
Slim 25×23 mm body; M12 / aviation connectors available.
Meets IEC 61496-1/-2 concepts when combined with a certified safety relay/PLC.

Values consolidated from provided MK manual shots; in case of discrepancy, shipped datasheet and certificates prevail.

Resolution & Application Guide

Resolution (K)	Typical Application
10 mm / 14 mm	Finger protection (assembly, fixtures, close-to-hazard stations)
20 mm	Palm protection (packaging, access openings)
40 mm	Hand/arm or body presence (aisles, zone guarding)

Protective height H = (n − 1) × K. Overall length L = P + H + J + 20 (10 mm allowance at each end). P/J depend on resolution; see spec tabs.

Technical Parameters (MK Series)

Category	Item	Typical Value / Option	Notes
Optical	Operating principle	Through-beam infrared LED (modulated)	Emitter/receiver pair with anti-interference design
	Resolution (K)	10 / 14 / 20 / 40 mm	Finger / Palm / Hand-arm or Body
	Protective height (H)	H = (n − 1) × K	n = number of beams
	Response time	≤ 15 ms	Varies with beam count
	Ambient light immunity	≥ 10,000 Lux	Incidence ≥ 5°
	Sensing range	0.3–3 m (A) / 0.3–6 m (B)	Model code A/B
Electrical / I/O	Supply	DC 12/24 V; AC 110–220 V (with relay output option)	Reverse/over-voltage protection
	Outputs	NPN or PNP, dual OSSD (NO/NC options)	3/5-wire examples
	Channel capability	≤ 200 mA (typ.)	Transistor output
	Protection	Short / Over-current / Over-load	Auto recovery
	Indicators	Power / Run / Blocked LEDs	Front facing
	Connector	M12 / Aviation	Optional
	Synchronization	Optical	Fewer cables, stronger immunity
Mechanical / Environment	Body section	≈ 25 × 23 mm (rectangular)	Aluminum housing; ABS end caps
	Overall length	L = P + H + J + 20	10 mm allowance at each end
	Ingress protection	IP65	Dust-tight, water-jet resistant
	Operating temp.	−10 ~ +40 °C	Storage −25 ~ +55 °C
	Humidity	Operating 35–85 %RH	Storage 35–95 %RH
Compliance	Standards	IEC 61496-1/-2 (concepts)	Safety distance per ISO 13855
	Certifications	CE etc.	Refer to delivered certificates
	System integration	Safety relay / Safety PLC	Independent dual inputs; do not tie channels together

MK Series Detailed Specifications

Tabs list typical beam counts (n) for each resolution (K) with protective height H and overall length L. Model format: MK-K-NN-H. Example: MK-20-06-100 (K=20, n=6, H=100). Distance options: A=0.3–3 m, B=0.3–6 m.

K (mm)	Beams n	Protective Height H (mm)	P/J (mm)	Overall Length L (mm)	Model Example	Distance
10	8	70	5/10	105	MK-10-08-70	A:0.3–3 m / B:0.3–6 m
10	10	90	5/10	125	MK-10-10-90	A:0.3–3 m / B:0.3–6 m
10	12	110	5/10	145	MK-10-12-110	A:0.3–3 m / B:0.3–6 m
10	14	130	5/10	165	MK-10-14-130	A:0.3–3 m / B:0.3–6 m
10	16	150	5/10	185	MK-10-16-150	A:0.3–3 m / B:0.3–6 m
10	18	170	5/10	205	MK-10-18-170	A:0.3–3 m / B:0.3–6 m
10	20	190	5/10	225	MK-10-20-190	A:0.3–3 m / B:0.3–6 m
10	22	210	5/10	245	MK-10-22-210	A:0.3–3 m / B:0.3–6 m
10	24	230	5/10	265	MK-10-24-230	A:0.3–3 m / B:0.3–6 m
10	26	250	5/10	285	MK-10-26-250	A:0.3–3 m / B:0.3–6 m
10	28	270	5/10	305	MK-10-28-270	A:0.3–3 m / B:0.3–6 m
10	30	290	5/10	325	MK-10-30-290	A:0.3–3 m / B:0.3–6 m
10	32	310	5/10	345	MK-10-32-310	A:0.3–3 m / B:0.3–6 m
10	34	330	5/10	365	MK-10-34-330	A:0.3–3 m / B:0.3–6 m
10	36	350	5/10	385	MK-10-36-350	A:0.3–3 m / B:0.3–6 m
10	38	370	5/10	405	MK-10-38-370	A:0.3–3 m / B:0.3–6 m
10	40	390	5/10	425	MK-10-40-390	A:0.3–3 m / B:0.3–6 m
10	42	410	5/10	445	MK-10-42-410	A:0.3–3 m / B:0.3–6 m
10	44	430	5/10	465	MK-10-44-430	A:0.3–3 m / B:0.3–6 m
10	46	450	5/10	485	MK-10-46-450	A:0.3–3 m / B:0.3–6 m
10	48	470	5/10	505	MK-10-48-470	A:0.3–3 m / B:0.3–6 m
10	50	490	5/10	525	MK-10-50-490	A:0.3–3 m / B:0.3–6 m
10	52	510	5/10	545	MK-10-52-510	A:0.3–3 m / B:0.3–6 m
10	54	530	5/10	565	MK-10-54-530	A:0.3–3 m / B:0.3–6 m
10	56	550	5/10	585	MK-10-56-550	A:0.3–3 m / B:0.3–6 m
10	58	570	5/10	605	MK-10-58-570	A:0.3–3 m / B:0.3–6 m
10	60	590	5/10	625	MK-10-60-590	A:0.3–3 m / B:0.3–6 m
10	62	610	5/10	645	MK-10-62-610	A:0.3–3 m / B:0.3–6 m
10	64	630	5/10	665	MK-10-64-630	A:0.3–3 m / B:0.3–6 m
10	66	650	5/10	685	MK-10-66-650	A:0.3–3 m / B:0.3–6 m
10	68	670	5/10	705	MK-10-68-670	A:0.3–3 m / B:0.3–6 m
10	70	690	5/10	725	MK-10-70-690	A:0.3–3 m / B:0.3–6 m
10	72	710	5/10	745	MK-10-72-710	A:0.3–3 m / B:0.3–6 m
10	74	730	5/10	765	MK-10-74-730	A:0.3–3 m / B:0.3–6 m
10	76	750	5/10	785	MK-10-76-750	A:0.3–3 m / B:0.3–6 m
10	78	770	5/10	805	MK-10-78-770	A:0.3–3 m / B:0.3–6 m
10	80	790	5/10	825	MK-10-80-790	A:0.3–3 m / B:0.3–6 m
10	82	810	5/10	845	MK-10-82-810	A:0.3–3 m / B:0.3–6 m
10	84	830	5/10	865	MK-10-84-830	A:0.3–3 m / B:0.3–6 m
10	86	850	5/10	885	MK-10-86-850	A:0.3–3 m / B:0.3–6 m
10	88	870	5/10	905	MK-10-88-870	A:0.3–3 m / B:0.3–6 m
10	90	890	5/10	925	MK-10-90-890	A:0.3–3 m / B:0.3–6 m
10	92	910	5/10	945	MK-10-92-910	A:0.3–3 m / B:0.3–6 m
10	94	930	5/10	965	MK-10-94-930	A:0.3–3 m / B:0.3–6 m
10	96	950	5/10	985	MK-10-96-950	A:0.3–3 m / B:0.3–6 m
10	98	970	5/10	1005	MK-10-98-970	A:0.3–3 m / B:0.3–6 m
10	100	990	5/10	1025	MK-10-100-990	A:0.3–3 m / B:0.3–6 m
10	102	1010	5/10	1045	MK-10-102-1010	A:0.3–3 m / B:0.3–6 m
10	104	1030	5/10	1065	MK-10-104-1030	A:0.3–3 m / B:0.3–6 m
10	106	1050	5/10	1085	MK-10-106-1050	A:0.3–3 m / B:0.3–6 m
10	108	1070	5/10	1105	MK-10-108-1070	A:0.3–3 m / B:0.3–6 m
10	110	1090	5/10	1125	MK-10-110-1090	A:0.3–3 m / B:0.3–6 m
10	112	1110	5/10	1145	MK-10-112-1110	A:0.3–3 m / B:0.3–6 m
10	114	1130	5/10	1165	MK-10-114-1130	A:0.3–3 m / B:0.3–6 m
10	116	1150	5/10	1185	MK-10-116-1150	A:0.3–3 m / B:0.3–6 m
10	118	1170	5/10	1205	MK-10-118-1170	A:0.3–3 m / B:0.3–6 m
10	120	1190	5/10	1225	MK-10-120-1190	A:0.3–3 m / B:0.3–6 m
10	122	1210	5/10	1245	MK-10-122-1210	A:0.3–3 m / B:0.3–6 m
10	124	1230	5/10	1265	MK-10-124-1230	A:0.3–3 m / B:0.3–6 m
10	126	1250	5/10	1285	MK-10-126-1250	A:0.3–3 m / B:0.3–6 m
10	128	1270	5/10	1305	MK-10-128-1270	A:0.3–3 m / B:0.3–6 m
10	130	1290	5/10	1325	MK-10-130-1290	A:0.3–3 m / B:0.3–6 m
10	132	1310	5/10	1345	MK-10-132-1310	A:0.3–3 m / B:0.3–6 m
10	134	1330	5/10	1365	MK-10-134-1330	A:0.3–3 m / B:0.3–6 m
10	136	1350	5/10	1385	MK-10-136-1350	A:0.3–3 m / B:0.3–6 m
10	138	1370	5/10	1405	MK-10-138-1370	A:0.3–3 m / B:0.3–6 m
10	140	1390	5/10	1425	MK-10-140-1390	A:0.3–3 m / B:0.3–6 m
10	142	1410	5/10	1445	MK-10-142-1410	A:0.3–3 m / B:0.3–6 m
10	144	1430	5/10	1465	MK-10-144-1430	A:0.3–3 m / B:0.3–6 m
10	146	1450	5/10	1485	MK-10-146-1450	A:0.3–3 m / B:0.3–6 m
10	148	1470	5/10	1505	MK-10-148-1470	A:0.3–3 m / B:0.3–6 m
10	150	1490	5/10	1525	MK-10-150-1490	A:0.3–3 m / B:0.3–6 m
10	152	1510	5/10	1545	MK-10-152-1510	A:0.3–3 m / B:0.3–6 m
10	154	1530	5/10	1565	MK-10-154-1530	A:0.3–3 m / B:0.3–6 m
10	156	1550	5/10	1585	MK-10-156-1550	A:0.3–3 m / B:0.3–6 m
10	158	1570	5/10	1605	MK-10-158-1570	A:0.3–3 m / B:0.3–6 m
10	160	1590	5/10	1625	MK-10-160-1590	A:0.3–3 m / B:0.3–6 m
10	162	1610	5/10	1645	MK-10-162-1610	A:0.3–3 m / B:0.3–6 m
10	164	1630	5/10	1665	MK-10-164-1630	A:0.3–3 m / B:0.3–6 m
10	166	1650	5/10	1685	MK-10-166-1650	A:0.3–3 m / B:0.3–6 m
10	168	1670	5/10	1705	MK-10-168-1670	A:0.3–3 m / B:0.3–6 m
10	170	1690	5/10	1725	MK-10-170-1690	A:0.3–3 m / B:0.3–6 m
10	172	1710	5/10	1745	MK-10-172-1710	A:0.3–3 m / B:0.3–6 m
10	174	1730	5/10	1765	MK-10-174-1730	A:0.3–3 m / B:0.3–6 m
10	176	1750	5/10	1785	MK-10-176-1750	A:0.3–3 m / B:0.3–6 m
10	178	1770	5/10	1805	MK-10-178-1770	A:0.3–3 m / B:0.3–6 m
10	180	1790	5/10	1825	MK-10-180-1790	A:0.3–3 m / B:0.3–6 m
10	182	1810	5/10	1845	MK-10-182-1810	A:0.3–3 m / B:0.3–6 m
10	184	1830	5/10	1865	MK-10-184-1830	A:0.3–3 m / B:0.3–6 m
10	186	1850	5/10	1885	MK-10-186-1850	A:0.3–3 m / B:0.3–6 m
10	188	1870	5/10	1905	MK-10-188-1870	A:0.3–3 m / B:0.3–6 m
10	190	1890	5/10	1925	MK-10-190-1890	A:0.3–3 m / B:0.3–6 m
10	192	1910	5/10	1945	MK-10-192-1910	A:0.3–3 m / B:0.3–6 m
10	194	1930	5/10	1965	MK-10-194-1930	A:0.3–3 m / B:0.3–6 m
10	196	1950	5/10	1985	MK-10-196-1950	A:0.3–3 m / B:0.3–6 m
10	198	1970	5/10	2005	MK-10-198-1970	A:0.3–3 m / B:0.3–6 m
10	200	1990	5/10	2025	MK-10-200-1990	A:0.3–3 m / B:0.3–6 m

Use distance option code A (0.3–3 m) or B (0.3–6 m) when ordering. Keep the model format MK-K-NN-H.

Typical Applications

Presses / shears / press brakes: 10–20 mm resolutions suit hand protection; fast response enables shorter safety distance.
Assembly fixtures & robot periphery: finger/palm detection with interlocked safety loop; easy maintenance.
Packaging / logistics: 40 mm and above for aisle and presence detection.
General machinery: integrate with a safety relay/PLC for stop, interlock and EDM monitoring.

Safety distance reference (ISO 13855): S = K × T + C, where T is machine stopping time.

Frequently Asked Questions

What resolution should I choose for finger or hand protection?

Pick resolution by what you are guarding. 10 mm and 14 mm give finger protection at close-to-hazard stations; 20 mm covers palm/hand protection; 40 mm suits hand-arm or body presence in aisles and zone guarding. Finer 14 mm detection follows the common finger-protection threshold used with ISO 13855 safety-distance calculations.

What is the sensing range of the MK light curtain?

The standard MK model (code A) covers 0.3–3 m between emitter and receiver, and an optional model (code B) extends this to 0.3–6 m. Optical synchronization means no sync cable is needed between the pair, which simplifies wiring and improves immunity over longer spans.

How do I wire the OSSD outputs — NPN or PNP?

The MK provides dual-channel OSSD outputs available in NPN or PNP with NO/NC options and 3/5-wire examples. PNP (sourcing) is standard for most modern PLCs and safety relays. Keep the two channels independent — never tie them together — and route them through a certified safety relay or safety PLC with EDM feedback.

Is the MK a Type 4 / PL e device on its own?

The MK is an economy ESPE designed around IEC 61496-1/-2 concepts and is intended to be combined with a certified safety relay or safety PLC to form the protective function. The achievable safety level depends on the complete system architecture. Refer to the delivered certificates and datasheet for the rating of your configuration.

Can the MK replace an Omron, SICK or Keyence finger-protection light curtain?

In many general-machinery cells, yes. The MK matches common resolutions (10/14/20/40 mm), through-beam infrared operation, dual NPN/PNP OSSD outputs, M12/aviation connectors and IP65 enclosure, so it can serve as a cost-effective alternative to SICK deTec, Omron F3SG or Keyence units. Match resolution, protective height H and response time to the original.

Specs reviewed by Engineer Cai, Senior Application Engineer. CE compliant — see certificates.

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Safety Light Curtain — Customer Cases

Real installations from DAIDISIKE clients. Click any case to view in full. Filter by scenario to quickly find a similar setup.

Safety light screen guarding on a press machine — compact hand protection — Press Guarding · Safety Light Screen
PressCompactType 4

Safety light barrier around a robot cell perimeter — Robot Cell · Safety Light Barrier
RobotPerimeterType 4

Anti-interference setup for adjacent safety light screens under strong ambient light — Anti-Interference · Adjacent Installations
Anti-InterferenceType 4

Guarding light curtain at an access gate for safe entry — Access Gate · Guarding Light Curtain
AccessType 4

Compact light screen for hand protection on a workstation — Workstation · Compact Light Screen
AssemblyCompact

Machine safety light curtain on a packaging line infeed — Packaging Line · Machine Safety Light Curtain
PackagingType 4

Multi-beam safety device for large opening protection — Large Opening · Multi-Beam Safety Device
Large OpeningArea

Photoelectric safety light curtain along an assembly conveyor — Assembly Conveyor · Photoelectric Light Curtain
AssemblyType 4

Safety light array for detection and measurement tasks — Detection · Safety Light Array (Measurement)
Measurement

Safety light grid for wide area guarding — Area Guarding · Safety Light Grid
AreaType 2/3