Lanbao PSS-TM20-E2 M18 Through-Beam Photoelectric Sensor Lanbao PSS-TM-E2 Series is the M12 connector version of Lanbao's M18 cylindrical through-beam photoelectric sensor family. It is built for DC automation systems that need long-distance object detection with separated emitter and receiver units, while keeping field wiring detachable and easier to service. This listing covers PSS-TM20DNB-E2 and PSS-TM20DPB-E2 receiver variants for a 20m through-beam sensing distance. The series uses an infrared 850nm light source, 10-30V DC supply, NPN or PNP output, NO/NC switching logic, M12 4-pin connector, PC + ABS housing, PMMA filter, and IP67 protection. For related Lanbao photoelectric sensors, compare the Lanbao PSS-TM Cable Series, Lanbao PSS-PM-E2 Polarized Series, Lanbao PSS-GM-E2 Transparent Object Series, and Lanbao PSE-TM20 Through-Beam Series. Technical Specifications Brand Lanbao Series PSS-TM-E2 Series Store SKUs Lanbao-PSS-TM20DNB-E2 and Lanbao-PSS-TM20DPB-E2 Sensor Type M18 cylindrical through-beam photoelectric sensor Sensing Mode Through-beam transmitter and receiver optical detection Emitter Reference PSS-TM20D-E2 reference Receiver Options PSS-TM20DNB-E2 for NPN output; PSS-TM20DPB-E2 for PNP output Sensing Distance 20m reference Standard Target >15mm diameter opaque object reference Light Source Infrared light, 850nm reference Direction Angle >4° reference Supply Voltage 10-30V DC Output Type NPN or PNP depending on selected variant Output Logic NO/NC reference Consumption Current Emitter