SENPUM – LM2-Q series

Amplifier Built-in (Cable/Relay Type)

The SENPUM LM2-Q Series is a family of medium and long-distance laser displacement sensors designed for accurate distance and position measurement across a variety of industrial applications. These sensors emit a class 2 red semiconductor laser and use triangulation technology for precise detection of object distance, even with surface colour or reflectivity variations, ensuring stable measurement in automation, counting, stacking, and object profiling tasks.

Available models in the LM2-Q Series range from short-range variants (e.g., LM2-Q045CAT) with measurement spans of a few centimetres to long-range types (e.g., LM2-Q2000T) capable of monitoring up to two metres. The sensors feature selectable response times, multiple analog and digital output options, rugged IP67 protection, and flexible supply inputs, making them suitable for integration with PLCs and factory control systems.

For more info, download our full technical spec.

Specifications

Cable type

Model	NPN/PNP Analog Voltage/Current	LM2-Q045AV	LM2-Q080AV	LM2-Q165AV	LM2-Q400AV	LM2-Q1000AV	LM2-Q2000AV
	NPN/PNP +RS-485	LM2-Q045T	LM2-Q080T	LM2-Q165T	LM2-Q400T	LM2-Q1000T	LM2-Q2000T
Type		Short-range type	Medium Range			Long range type
Measurement center distance		30mm	50mm	100mm	200mm	400mm	600mm
Measurement range		25~45mm	35~80mm	60~165mm	100~400mm	150~1000mm	150~2000mm
Repeatability		10μm	30μm	70μm	200μm@100~300mm 400μm@300~400mm	0.5mm@150~400mm 1mm@400~600mm 3mm@600~800mm 6mm@800~1000mm	0.5mm@150~400mm 1mm@400~600mm 3mm@600~800mm 6mm@800~1200mm 10mm@1200~1800mm 20mm@1800~2000mm
linear accuracy		±0.1%F.S.			±0.2%F.S.(100~300mm) ±0.3%F.S.(300~400mm)	±0.2%F.S.(150~400mm) ±0.3%F.S.(400~600mm) ±0.5%F.S.(600~800mm) ±1%F.S.(800~1000mm)	±0.2%F.S.(150~400mm) ±0.3%F.S.(400~600mm) ±0.5%F.S.(600~800mm) ±1%F.S.(800~1200mm) ±1.5%F.S.(1200~1800mm) ±2%F.S.(1800~2000mm)
Temperature characteristic		0.03%F.S./℃
light source		Red Semiconductor Laser Class 2 Maximum output:1mW, Beam wavelength:650nm
Beam diameter		About 0.51.5mm at 25mm About 0.30.6mm at 45mm	About 0.51.5mm at 35mm About 0.30.5mm at 80mm	About 0.51.5mm at 60mm About 0.40.5mm at 160mm	Φ0.8mm at 100mm Φ0.6mm at 400mm	Φ1mm at 150mm Approx. Φ2mm at 1000mm	Φ1mm at 150mm Approx. Φ2mm at 1000mm Φ7mm at 2000mm
Supply Voltage		12V~24VDC±10% Includes fluctuation of 10% (p-p)
Current consumption		35mA or less (at 24VDC supply voltage), 60mA or less (at 12VDC supply voltage)
Control output		NPN/PNP switchable; Maximum output current 200mA
Analog output		0-20mA;4-20mA;0-5V;0-10V;±5V;±10V
Response time (technology)		1.5ms/5ms/10ms/50ms switchable
External input		NPN contactless input Valid: 0V~+1.2VDC Input impedance: approx. 10kΩ
Protective structure		IP67
Ambient temperature		-10~40°C (no icing)
Ambient humidity		35%~85%RH (no condensation)
Ambient Illumination		Incandescent lamps: 3000lux or less
Power cable (of an appliance etc)		15cm highly flexible drag chain type cable M8 6PIN
Material (that sth is made of)		Housing: Zinc Alloy, Indicator Cover: PC Lens: Glass, Buttons: ABS, Cable: PVC
Weights		Approx. 150g (including cable)

Note: When measurement conditions are not specified, the following conditions of use apply: Power supply voltage: 24VDC, ambient temperature: +20°C, response time: 10ms, analog output value for measuring center distance. Target object: White diffusers .

Relay type

Model	NPN/PNP Analog Voltage/Current	LM2-Q045CAAV	LM2-Q080CAAV	LM2-Q165CAAV	LM2-Q400CAAV	LM2-Q1000CAAV	LM2-Q2000CAAV
	NPN/PNP +RS-485	LM2-Q045CAT	LM2-Q080CAT	LM2-Q165CAT	LM2-Q400CAT	LM2-Q1000CAT	LM2-Q2000CAT
Type		Short-range type	Medium Range			Long range type
Measurement center distance		30mm	50mm	100mm	200mm	400mm	600mm
Measurement range		25~45mm	35~80mm	60~165mm	100~400mm	150~1000mm	150~2000mm
Repeatability		10μm	30μm	70μm	200μm@100~300mm 400μm@300~400mm	0.5mm@150~400mm 1mm@400~600mm 3mm@600~800mm 6mm@800~1000mm	0.5mm@150~400mm 1mm@400~600mm 3mm@600~800mm 6mm@800~1200mm 10mm@1200~1800mm 20mm@1800~2000mm
linear accuracy		±0.1%F.S.			±0.2%F.S.(100~300mm) ±0.3%F.S.(300~400mm)	±0.2%F.S.(150~400mm) ±0.3%F.S.(400~600mm) ±0.5%F.S.(600~800mm) ±1%F.S.(800~1000mm)	±0.2%F.S.(150~400mm) ±0.3%F.S.(400~600mm) ±0.5%F.S.(600~800mm) ±1%F.S.(800~1200mm) ±1.5%F.S.(1200~1800mm) ±2%F.S.(1800~2000mm)
Temperature characteristic		0.03%F.S./℃
light source		Red Semiconductor Laser Class 2 Maximum output:1mW, Beam wavelength:650nm
Beam diameter		About 0.51.5mm at 25mm About 0.30.6mm at 45mm	About 0.51.5mm at 35mm About 0.30.5mm at 80mm	About 0.51.5mm at 60mm About 0.40.5mm at 160mm	Φ0.8mm at 100mm Φ0.6mm at 400mm	Φ1mm at 150mm Approx. Φ2mm at 1000mm	Φ1mm at 150mm Approx. Φ2mm at 1000mm Φ7mm at 2000mm
Supply Voltage		12V~24VDC±10% Includes fluctuation of 10% (p-p)
Current consumption		35mA or less (at 24VDC supply voltage), 60mA or less (at 12VDC supply voltage)
Control output		NPN/PNP switchable; Maximum output current 200mA
Analog output		0-20mA;4-20mA;0-5V;0-10V;±5V;±10V
Response time (technology)		1.5ms/5ms/10ms/50ms switchable
External input		NPN contactless input Valid: 0V~+1.2VDC Input impedance: approx. 10kΩ
Protective structure		IP67
Ambient temperature		-10~40°C (no icing)
Ambient humidity		35%~85%RH (no condensation)
Ambient Illumination		Incandescent lamps: 3000lux or less
Power cable (of an appliance etc)		2M highly flexible drag chain type cable
Material (that sth is made of)		Housing: Zinc Alloy, Indicator Cover: PC Lens: Glass, Buttons: ABS, Cable: PVC
Weights		Approx. 150g (including cable)