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Proximity Sensor Ideal for Manufacturing Applications

  • Background Suppression
  • Compact Size
  • Quick Response Time
  • Adjustable Sensing Range
  • Detects translucent or opaque objects independent of color
  • 20 to 30 VDC Power Input
  • 2 to 6 Inch Sensing Range
  • LED Indicator
  • NPN Output
  • Narrow Sensing Beam

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About the RPS-400-6P Sensor

The RPS-400-6P is a compact, high frequency sensor. It was introduced to the Migatron family of ultrasonic sensors to better meet the needs of the machine manufacturing industry. The RPS-400-6P can be used as a proximity sensor, or a level sensor.

This sensor has a wide array of application solutions not found in other proximity sensor technologies. The RPS-400-6P has an adjustable two to six inch sensing range with background suppression (meaning any object within the desired range is detected, while objects out of the desired range are ignored).

It cannot be affected by changes in target color or material. The RPS-400-6P is capable of detecting vibrating and/or tilting targets. A response time of no more than 2.1 ms and an operating frequency of 400 kHz makes the RPS-400-6P a repeatable and accurate high speed sensor.

The RPS-400-6P is a three wire NPN transistor output device. The transistor can switch 30VDC at 50 mA continuously. It has a molded PBT plastic case that is filled with epoxy potting material. The transducer face is made of white silicone. A six-foot cable comes standard with the RPS-400-6P. Special cable lengths or connectors are also available for OEM applications.

Like all Migatron ultrasonic sensors, the RPS-400-6P is ideal for detecting clear objects. It’s ability to operate in dusty environments makes it ideal for rugged conveyors, PC board handling equipment, and fillers.


Operational Range:Adjustable 2″ to 6″
Power Input:20 – 30 VDC Reverse Polarity Protected
Input Current:25mA, Typical
Ambient Temperature:-18 to 60°C or 0 to 140°F
Humidity:0 to 95% Non-Condensing
Housing:PBT Plastic with glass filled epoxy sensing face
Output:NPN Open Collector Transistor 30V Max. 50mA continuous
Transducer Frequency:400 kHz
Response Time:0.2ms min / 2.1 ms max
Weight:2 ounces (cable not included)

Ordering Information

Part NumberRangeOutput
RPS-400-6P2 – 6″NPN Open Collector Transistor (30V max / 50mA continuous)


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