The SICK UM18-212161101 is a plastic-housed ultrasonic proximity sensor from the UM18 series, delivering a PNP switched output for object detection from 65 mm out to 350 mm. That 350 mm maximum sensing distance covers medium-range level monitoring, presence checking on conveyor lanes, and clear-object detection where photoelectric sensors struggle — think glass bottles or transparent film. The 65 mm minimum blind zone means you mount it at least that far from the target; closer than that and the sensor cannot give a stable reading. Rated IP65 and IP67, the sensor body and M12 connector tolerate washdown and temporary submersion. The 12 Hz switching frequency limits it to slower-moving targets. Power it from a 10–30 VDC supply; the PNP output sinks a load referenced to the positive rail, the typical wiring for a PLC digital input in most European and Asian panels. The M12 4-pin connector (standard A-coded) mates with off-the-shelf cordsets, so panel wiring is a straight plug-in job.
SICK UM18-212161101 Ultrasonic Sensor, PNP, 350 mm
MPNUM18-212161101
SICK, Series UM18, Ultrasonic Sensor, PNP, 65–350 mm, IP65/IP67, Connector M12 4-Pin.
$132.21 – $206.47Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | UM18 |
| Parameter | Value |
|---|---|
| Sensing distance, max. | 350 mm |
| Parameter | Value |
|---|---|
| Operating voltage, max. | 30 V |
| Operating voltage, min. | 10 V |
| Termination type | Connector, M12, 4-Pin |
| Parameter | Value |
|---|---|
| Switching frequency | 12 Hz |
| Parameter | Value |
|---|---|
| Housing material | Plastic;Polybutylene Terephthalate (PBT) |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| IP protection rating | IP65;IP67 |
| Parameter | Value |
|---|---|
| Sensing distance min. | 65 mm |
| Ultrasonic sensor output type | PNP |
Product details
Frequently asked questions
What is the sensing range of UM18-212161101?
The sensing distance is 65 mm minimum to 350 mm maximum, with a PNP output and 12 Hz switching frequency.
What is the difference between UM18-212161101 and UM18-211161101?
The UM18-212161101 has a 65–350 mm range at 12 Hz, while the UM18-211161101 has a 30–250 mm range at 25 Hz. Both share the same plastic housing, M12 connector, IP rating, and PNP output, so they are mechanically and electrically interchangeable.
MPN
UM18-212161101