Lanbao PSR-TM20 DC Through-Beam Photoelectric Sensor

Lanbao PSR-TM20 DC Through-Beam Photoelectric Sensor

Lanbao PSR-TM20 Series is a compact DC through-beam photoelectric sensor set for automation systems that need long-distance beam-interruption detection in a small ABS housing. It uses separate emitter and receiver units aligned across the sensing path, giving reliable object detection independent of target surface color or reflectivity.

This listing covers PSR-TM20DNB, PSR-TM20DPB, and their E2 M12 connector versions. The series supports 0.3-20m through-beam sensing, infrared 850nm light source, NPN or PNP receiver output, NO/NC logic, 10-30V DC supply, IP67 protection, and either a 2m PVC cable or M12 4-pin connector.

For related Lanbao photoelectric sensors, compare the Lanbao PR18-TM20 DC M18 Through-Beam Series, Lanbao PR18S-TM20 DC Through-Beam Series, and Lanbao PR30S-TM20 DC M30 Through-Beam Series. For background-suppression sensing, see the Lanbao PTB-YC200 Background Suppression Series.

Technical Specifications

Brand	Lanbao
Series	PSR-TM20 Series
Sensor Type	Compact through-beam photoelectric sensor set
Detection Type	Through beam
Rated Sensing Distance	0.3-20m reference
Standard Target	Opaque object greater than 15mm diameter reference
Direction Angle	>4 reference
Light Source	Infrared LED, 850nm
Dimensions	35 x 31 x 15mm reference
Output Type	NPN for DNB variants; PNP for DPB variants
Output Logic	NO/NC, depending on selected receiver part number
Supply Voltage	10-30V DC
Residual Voltage	<=1V receiver reference
Load Current	<=100mA
Consumption Current	<=15mA emitter; <=18mA receiver reference
Hysteresis	<5% reference
Circuit Protection	Short-circuit, overload, and reverse-polarity protection
Response Time	<1ms
Indicators	Green power indicator; yellow output, short-circuit, or overload indication reference
Ambient Temperature	-15C to +60C
Ambient Humidity	35-95%RH, non-condensing
Voltage Withstand	1000V AC 50/60Hz for 60s reference
Insulation Resistance	>=50MOhm at 500V DC reference
Vibration Resistance	10-50Hz, 0.5mm reference
Protection Rating	IP67
Housing Material	ABS housing with PMMA lens reference
Connection Options	2m PVC cable or M12 4-pin connector, depending on selected variant
Available Store SKUs	PSR-TM20DNB, PSR-TM20DPB, PSR-TM20DNB-E2, and PSR-TM20DPB-E2

Integration Notes & Hardware Guidance

• Beam alignment: Through-beam sensing requires separate emitter and receiver units to be aligned across the sensing path before commissioning.
• Output selection: Choose DNB variants for NPN receiver output or DPB variants for PNP receiver output, matching the controller input type.
• Connection selection: Choose fixed 2m cable versions for direct wiring or E2 M12 4-pin connector versions when detachable wiring and easier replacement are preferred.
• Power planning: Confirm the 10-30V DC supply, load current, and controller input wiring before connecting the receiver output.
• Installation check: Verify mounting rigidity, beam path clearance, optical alignment, and indicator behavior after the emitter and receiver are installed.

Packing List

Item	Qty	Notes
Lanbao PSR-TM20 through-beam photoelectric sensor set	1	Selected NPN or PNP, cable or E2 connector variant
Emitter and receiver bodies	1 set	Through-beam sensing requires both sides of the optical path
Integrated cable or M12 connector body	1 set	Connection type depends on selected variant
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 detection mode does the PSR-TM20 Series use?

It uses through-beam detection, with separate emitter and receiver units mounted opposite each other.

What sensing distance does this series support?

The official sensing-distance reference is 0.3-20m.

How do I choose between DNB and DPB variants?

Choose DNB variants for NPN receiver output or DPB variants for PNP receiver output, depending on your controller input wiring.

How do I choose between cable and E2 versions?

Cable versions use a fixed 2m PVC cable, while E2 versions use an M12 4-pin connector for detachable wiring and easier sensor replacement.

Does this sensor require a reflector?

No. Through-beam sensing uses a separate emitter and receiver, so it does not require a reflector.