Omron E3ZM-LS81H 2M Photoelectric Sensor
Omron E3ZM-LS81H 2M is a PNP background-suppression reflective photoelectric sensor specified for sensing from 10 to 100 mm. A red LED directs optical light toward the target, while the BGS principle helps reduce the effect of surfaces located beyond the required sensing point. The PNP output transfers the switching state to compatible industrial control inputs, and Light-ON or Dark-ON operation allows the output logic to suit the control sequence. The sensor operates from 10 to 30 VDC, draws up to 25 mA, and includes a 2 m pre-wired cable for electrical connection. Response time is specified at 1 ms maximum. Within the E3ZM Series, the E3ZM-LS81H 2M provides PNP fixed wiring within the 100 mm BGS sensor range across Omron Sensor Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3ZM-LS81H 2M |
Omron E3ZM-LS81H 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | BGS reflective |
| Shape | Square type |
| Sensing Distance | 10 to 100 mm |
| Power Supply Voltage | 10 to 30 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired cable length 2m |
| Current Consumption | 25 mA max. |
| Light Source (Wavelength) | Red LED |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | 1 ms max. |
| Degree Of Protection | IP67 |
| Material | SUS316L |
| Material Lens | Methacrylate resin |
| Weight | 90 g |
The Omron E3ZM-LS81H 2M Photoelectric Sensor uses PNP background-suppression reflective sensing across a specified distance from 10 to 100 mm. A red LED supplies optical light to the target area, while the BGS arrangement helps establish the switching zone with reduced influence from surfaces positioned beyond it. The PNP output communicates the state to compatible PLC and machine-control inputs. Operating voltage is 10 to 30 VDC, and current consumption is specified at 25 mA maximum. Light-ON and Dark-ON operation allows the switching sequence to be selected for the control requirement, while response time is stated at 1 ms maximum. A 2 m pre-wired cable provides the fixed electrical connection. SUS316L and methacrylate resin are listed in the supplied material information.
Where a short-range Omron BGS sensor is required with PNP rather than NPN switching, the relevant model is the E3ZM-LS81H. Its 10 to 100 mm sensing span matches the supplied NPN LS61H range, allowing the output configuration to become the main electrical distinction between the two models. The 2 m cable suits installations where the machine-side connection is located relatively near the sensor, while the 10 to 30 VDC supply range supports compatible industrial inputs. Current consumption remains limited to 25 mA maximum and the switching response is specified at 1 ms. For a related NPN version with the same stated sensing distance and 2 m cable, see E3ZM-LS61H 2M.
