Lanbao PSE-TM20 DC Through-Beam Photoelectric Sensor

Lanbao PSE-TM20 DC Through-Beam Photoelectric Sensor

Lanbao PSE-TM20 Series is a compact little-square through-beam photoelectric sensor for DC automation systems that need longer sensing distance in a small sensor body. It uses a separate emitter and receiver across the detection path, helping deliver stable beam-interruption detection with less dependence on target color, reflectivity, or surface finish.

This listing covers PSE-TM20DNB, PSE-TM20DPB, and their E3 M8 connector versions. The series supports 20m through-beam sensing, NPN or PNP receiver output, NO/NC output logic, 10-30V DC supply, IP67 protection, and either a 2m PVC cable or M8 4-pin connector depending on the selected variant.

For related Lanbao photoelectric sensors, compare the Lanbao PSE Little Square Sensor Family, Lanbao PSE-TM10 DC Through-Beam Series, Lanbao PSR-TM20 DC Through-Beam Series, and Lanbao PR18-TM20 DC M18 Through-Beam Series.

Technical Specifications

Brand	Lanbao
Series	PSE-TM20 Series
Sensor Type	Little-square through-beam photoelectric sensor
Detection Type	Through beam
Rated Sensing Distance	20m reference
Emitter Reference	PSE-TM20D
Receiver Variants	PSE-TM20DNB and PSE-TM20DPB, plus matching E3 connector versions
Standard Target	Opaque object greater than 15mm diameter within sensing range reference
Direction Angle	>4 reference
Light Source	Infrared, 850nm reference
Output Type	NPN for DNB variants; PNP for DPB variants
Output Logic	NO/NC
Supply Voltage	10-30V DC
Voltage Drop	<=1V receiver reference
Load Current	<=200mA receiver reference
Consumption Current	<=20mA emitter and receiver reference
Circuit Protection	Short-circuit, overload, reverse-polarity, and zener protection reference
Response Time	<=1ms
Adjustment Reference	Knob adjustment and button setting references, depending on function setup
Indicators	Green power or stable indicator; yellow output, overload, or short-circuit indication reference
Ambient Light Immunity	Sunlight interference <=10000Lux; incandescent light interference <=3000Lux reference
Operating Temperature	-25C to +55C
Storage Temperature	-25C to +70C
Protection Rating	IP67
Standards Reference	CE, EN60947-5-2, and IEC60947-5-2 reference
Housing Material	PC + ABS housing with PMMA filter reference
Weight Reference	Approximately 50g
Connection Options	2m PVC cable or M8 4-pin connector, depending on selected variant
Available Store SKUs	PSE-TM20DNB, PSE-TM20DPB, PSE-TM20DNB-E3, and PSE-TM20DPB-E3

Integration Notes & Hardware Guidance

• Beam alignment: Through-beam sensing requires the emitter and receiver to be aligned across the detection 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 E3 M8 connector versions when detachable wiring and easier replacement are preferred.
• Distance setup: Confirm the 20m sensing path, stable indicator behavior, and receiver switching state after installation.
• Installation check: Verify optical-axis alignment, mounting rigidity, beam path clearance, and receiver output behavior before final use.

Packing List

Item	Qty	Notes
Lanbao PSE-TM20 through-beam photoelectric sensor set	1	Selected NPN or PNP, cable or E3 connector variant
Emitter and receiver bodies	1 set	Through-beam sensing requires both sides of the optical path
Integrated cable or M8 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 PSE-TM20 Series use?

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

What sensing distance does this series support?

The official rated sensing distance reference is 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 E3 versions?

Cable versions use a fixed 2m PVC cable, while E3 versions use an M8 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 pair, so it does not require a reflector.