The Industrial Proximity Sensor

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The TX-55 is a high-performance, weatherproof proximity detector capable of detecting objects from 12 inches out to 254 inches (6.45 meters).

The TX-55 features a very narrow beam and rapid measurement time, making it ideal for use cases like presence detection inside a distance window and object determination.

Operation is simple. Apply 7-35V and the unit will self-calibrate and begin taking range measurements every 49msec. The signal line (white wire) will become high once the unit detects an object within a user-selectable range. When the object is moved outside the selected range window the signal wire will become low.

The TX-55 features a robust, welded steel IP67 housing and a universal pole-mounting kit that supports pipe up to 3 inches in diameter. A 50′ integrated, shielded power / data cable is included. Two units can operate together in master-slave mode, for enhanced zone coverage.


  • Proximity Detection
  • Trigger Source for RFID / Video Equipment



  • Welded Steel Enclosure
  • IP67 Compliant
  • Tamper-Resistant Housing

High Performance

  • Rapid measurment time (~20Hz)
  • Digital output: High = 4.8V, Low = 0V
  • Narrow, well-defined beam
  • Long range: over 6 meters


  • Simple, one wire digital output
  • User selectable range window
  • Highly visible LED when target is acquired

Flexible Installation Options

  • Adjustable Pole Mounting Kit
  • 50′ of cable included. (Longer lengths available)
  • Low current draw (20mA at 10V)
  • Multiple Operating Modes: Solo, Master, Slave
  • Safer installation — no on-track activity needed.