SENPUM – LA-MR Series

Ultra-long range (Sensor head+Controller) Retro-reflective type

Brand : SENPUM

The SENPUM LA-MR Series is a family of long-distance retro-reflective laser sensors engineered for stable object detection at very long ranges up to 100 m or more in industrial automation environments. These sensors use high-power red laser light sources and robust metal housings to deliver reliable performance even in harsh conditions where large distances or high precision are required. The sensors are simple to configure via key-based sensitivity adjustment, eliminating the need for complex calibration while enabling quick deployment on production lines, material handling systems, and outdoor automation tasks.

Featuring retro-reflective detection, the LA-MR Series performs well with opaque targets and produces large-area detection spots suitable for long-distance sensing. Built-in protections such as reverse-current protection, over-current protection, and over-voltage protection help ensure reliable operation. With IP66 environmental protection, these sensors are suitable for industrial settings with dust and water exposure.

For more info, download our full technical spec.

Specifications

NPN output

Model LA-MR50MN LA-MR100MN
Type Retro-reflective
Long-distance
Output type NPN
Detecting distance 50m 100m
Object to be detected Opaque object
Spot size Approx. 15mm Approx. 80mm
Blind zone 100mm 200mm
Minimum detected object 1mm 2mm
Light source High power red laser
Power voltage Between 10 to 30VDC±10%, Ripple Voltage (P-P): 10% max .
Control output NPN or PNP: 100mA max (40V), Residual Voltage: 1V max
Current consumption Maximum 30mA
Response time 1ms
Sensitivity adjustment Key setting
Output type LIGHT-ON/DARK-ON
Indicator light Output and power supply: red LED; stable operation: green LED
Circuit protection Reverse current protection, over-current protection, over-voltage protection
Protection class IP66
Ambient luminosity Incandescent: maximum 5000lux;Daylight: maximum 20000lux
Ambient temperature -20 to +55°C, no freezing
Relative humidity 35 to +85%, no condensation
Enclosure Metal
Length 2m
Weight Approx. 85g

 

PNP output

Model LA-MR50MP LA-MR100MP
Type Retro-reflective
Long-distance
Output type PNP
Detecting distance 50m 100m
Object to be detected Opaque object
Spot size Approx. 15mm Approx. 80mm
Blind zone 100mm 200mm
Minimum detected object 1mm 2mm
Light source High power red laser
Power voltage Between 10 to 30VDC±10%, Ripple Voltage (P-P): 10% max .
Control output NPN or PNP: 100mA max (40V), Residual Voltage: 1V max
Current consumption Maximum 30mA
Response time 1ms
Sensitivity adjustment Key setting
Output type LIGHT-ON/DARK-ON
Indicator light Output and power supply: red LED; stable operation: green LED
Circuit protection Reverse current protection, over-current protection, over-voltage protection
Protection class IP66
Ambient luminosity Incandescent: maximum 5000lux;Daylight: maximum 20000lux
Ambient temperature -20 to +55°C, no freezing
Relative humidity 35 to +85%, no condensation
Enclosure Metal
Length 2m
Weight Approx. 85g

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