Soteria Switch Monitor Unit

Product Overview

The Soteria Switch Monitor Unit is designed to monitor the state of one or more single pole, volt-free contacts connected on a single pair of cables to report the status. It has a selectable status reporting delay making it suitable for monitoring flow switches.


  • Improved design for ease of wiring meaning faster installation
  • Short circuit isolator
  • Address range 1 – 126
  • Compatibility with XP95 and Discovery protocol


Supply Voltage (Vmin—Vmax)

17 to 35V dc


5-13V peak to peak

Power-up surge current

900µA per Switch Monitor

Quiescent current

500µA per Switch Monitor

Max Current LEDs On

2mA per Switch Monitor

Max current LEDs disabled

500µA per Switch Monitor

Isolator data

Refer to short-circuit isolation datasheet PDS201-9001

Operating Temperature

-40°C + 70°C


0% to 95% RH (no condensation or icing)   

Vibration, impact and shock

EN54-17, EN54-18, AS7240.17 & AS7240.18

Standards & Approvals

EN54-17, EN54-18, CPR, LPCB, AS7240.17, AS7240.18 & SAI Global


60mm height x 150mm width x 90mm depth



Item Numbers

4110-1104 Soteria Switch Monitor Unit