Product Overview
Banner QM42 Series Background Suppression Sensor, 25-400mm, NPN Output, 4-Pin M12, IP67
Condition
Single unit available. Unused, without original packaging or paperwork. Light surface scuffing across the sensor window face and housing — cosmetic only, should not affect performance. Label markings are fully legible: QMT42VN6AFV400Q, 10-30V dc, 100mA max. load, CE marked. M12 connector threads are clean and undamaged. Acquired from a contract manufacturer clearing surplus stock.
Ships same business day from Idaho. Packed carefully.
No hassle resolution if there is an issue. Serving customers since 1999.
Product Overview
Banner QMT42VN6AFV400Q — adjustable-field background suppression photoelectric sensor from the QM42 / QMT42 Easy Mount series. Detects objects within a 25-400mm range using a visible red LED (680nm). Detection range is potentiometer-adjustable, and background suppression ensures objects beyond the set field are ignored. Outputs an NPN complementary SPDT discrete signal. Connects via 4-pin M12 integral quick disconnect. Zinc alloy die-cast housing with acrylic lens, rated IP67 and NEMA 4X.
Key Features
- Sensing mode: adjustable field with background suppression
- Range: 25-400mm, potentiometer-adjustable
- Supply voltage: 10-30V DC
- Output: NPN complementary SPDT discrete (not PNP — see FAQ)
- Connection: 4-pin M12 integral quick disconnect
- Sensing beam: visible red LED, 680nm wavelength
- Response time: 1ms
- Housing: zinc alloy die-cast, black crinkle finish
- Lens material: acrylic
- Protection: IP67, NEMA 4X
- Operating temperature: -20 to +55°C
- Max load current: 100mA
- CE marked — confirmed on label
Applications
- Object presence and position detection in automated packaging and conveyor systems
- Detecting bearing wear and pulley drive misalignment
- Monitoring for signs of gearbox and bearing failure
- General part detection and counting in manufacturing lines
- Storage and warehouse automation where precise range control is required
Frequently Asked Questions
Is this an NPN or PNP output sensor?
NPN. The output is complementary SPDT NPN. If your system requires PNP, the correct variant is QMT42VP6AFV400Q — a different part number. Confirm your controller's input type before ordering.
What connector does this use?
4-pin M12 integral quick disconnect. A mating M12 cable or cordset is not included — you will need one to wire this into your system.
Is this sensor washdown-rated?
No. Rated IP67 and NEMA 4X for dust and temporary water immersion, but not rated for direct washdown. Do not use in high-pressure wash environments.
What is the sensing range?
25mm to 400mm, continuously adjustable via onboard potentiometer. Background suppression ignores objects beyond the set detection point.
Does this include a cable, mounting hardware, or documentation?
Not included. The sensor only — no cable, mounting hardware, or paperwork.
Background suppression is the kind of feature that sounds like fine print until the day a reflective conveyor wall starts triggering false detects. This sensor was built to cut through that noise — and it still can.
