Lanbao PSS-TM20-E2 M18 Through-Beam Photoelectric Sensor

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 <=20mA; receiver <=20mA reference
Load Current	<=200mA receiver reference
Voltage Drop	<=1V reference
Distance Adjustment	Single-turn potentiometer reference
Circuit Protection	Short-circuit, overload, and reverse-polarity protection reference
Response Time	<=1ms reference
Indicators	Green LED for power and stable signal; yellow LED for output, short circuit, or overload reference
Ambient Light Immunity	Sunlight interference <=10,000lux; incandescent light interference <=30,000lux reference
Operating Temperature	-25C to +55C
Storage Temperature	-25C to +70C
Protection Rating	IP67
Certification Reference	CE reference
Housing Material	PC + ABS housing with PMMA filter reference
Connection Reference	M12 4-pin connector
Mounting Style	M18 threaded cylindrical body
Accessory Reference	M18 nuts and instruction manual reference; actual accessory contents may vary by shipment batch

Integration Notes & Hardware Guidance

• Emitter and receiver alignment: Through-beam sensors require the transmitter and receiver to face each other across the detection path.
• Output selection: Choose PSS-TM20DNB-E2 for NPN output or PSS-TM20DPB-E2 for PNP output, matching the controller input type.
• Connector planning: Use the E2 version when an M12 connector is preferred for detachable field wiring and faster replacement.
• NO/NC setup: Confirm the NO or NC behavior during commissioning before connecting the signal to safety, counting, or machine-control logic.
• Environment check: Dust, water spray, strong ambient light, target speed, vibration, and alignment distance should be verified on the final machine.

Packing List

Item	Qty	Notes
Lanbao PSS-TM20-E2 photoelectric sensor	1	Selected DNB-E2 or DPB-E2 receiver variant
M12 connector interface	1	Connector cable may be supplied separately depending on order configuration
Mounting nut set	1 set	Accessory contents may vary by shipment batch
Product label and packaging	1	Packaging may vary by shipment batch
Documentation reference	1	Digital or printed documentation may vary by shipment batch

FAQ

What is the difference between PSS-TM and PSS-TM-E2?

PSS-TM is the cable version reference, while PSS-TM-E2 uses an M12 connector for detachable wiring.

What sensing mode does the PSS-TM-E2 Series use?

It uses through-beam sensing, where an object is detected when it interrupts the optical path between the emitter and receiver.

What is the sensing distance of this series?

The PSS-TM20-E2 reference distance is 20m, subject to correct emitter and receiver alignment.

How do I choose between PSS-TM20DNB-E2 and PSS-TM20DPB-E2?

Choose PSS-TM20DNB-E2 for NPN output or PSS-TM20DPB-E2 for PNP output, depending on your controller input wiring.

Does a through-beam sensor need alignment?

Yes. The emitter and receiver must be aligned across the detection path for stable operation.