Power Failure Sensor
RMA-PS1-SEN
The power failure sensor detects real-time power failure.
Receive immediate alerts when power failure is detected.

- Provides real-time detection of power failure
- Used to monitor the power supply of a main, 3 phase, UPS or backup generator source
- Install multiple sensors for alerts when one power source fails and back up supply takes over
- Plug and play switch sensor provides dry contact output
- Comes with 5V power adapter for direct plug to power source
- Extendable cable length up to 274m (900 feet)
Description
Power failure sensor
The power failure sensor detects real-time power failure.
Provides real-time detection of power failure.
Used to monitor the power supply of a main, 3 phase, UPS or backup generator source.
Install multiple sensors for alerts when one power source fails and back up supply takes over.
Plug and play switch sensor provides dry contact output.
Comes with 5V power adapter for direct plug to power source.
Cable length can be extended to 274.32m (900 feet) using standard speaker wire, twisted pair or any reliable low voltage 2-wire cable.
Used with Varius Message Router (cellular) with 8 dry contact inputs and Varius Message Router (non-cellular) with 8 dry contact inputs.
Configuration
The power failure sensor is a switch sensor that provides dry contact output.
Sensor outputs Open dry contact output when power failure is detected.
Sensor is connected to Varius Message Router with 8 dry contact inputs.
Configure rules for sending trip alerts, repeated trip alerts and recovery alerts.
Create alert profiles based on different recipients and alert channels for wider reach.
Sensor connnection
Sensor configuration | Alert profile
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Logs
The power failure sensor allows users to view real-time logs.
Real-time logs provide live information of the power failure status.
Supports filtering rules based on log date, dry contact Open/Closed status and sensor status.
Logs can be exported to Excel or other external systems for further processing.
Customize log retention period according to your compliance policy.
Real-time logs![]() |
Specifications
Environment condition monitored | Power on/off |
Sensor input | Power socket to detect power on/off |
Sensor output | Dry contact open/close Power failure: Dry contact open Power normal: Dry contact close |
Power source | 5VDC 1A adapter |
Sensor cable type | 2 wire sensor cable |
Sensor cable length | 7.62 meters (25 feet) |
Maximum sensor cable length | 274.32 meters (900 feet) |
Warranty | 90 days |
Compatible monitoring unit | Varius Message Router (cellular) with 8 dry contact inputs Varius Message Router (non-cellular) with 8 dry contact inputs |