• 12 Volts DC, 0.8 Amp Output Capacity
  • RS-485 MODBUS Communication
  • Intelligent Battery Charging
  • Battery Disconnection and degrading detection


SENSOPER EN54 series Power Supply Units are designed for fire alarm applications with compliance to EN54-4. The PSU has advanced charging management system for the Battery and monitoring systems for fail safe operation.
The PSU continuously monitors the power consumption of the Load connected to the output as well as battery charging currents for additional safety.
Its battery impedance monitoring systems alerts if the battery is degraded and temperature compensated charging improves the life of the battery.


  • 12 Volts DC, .8 Amp Output Capacity
  • Covered critical parts to guard against touching live parts
  • Includes two single-pole volt-free changeover relay that switches for Battery fault and AC fault conditions.
  • MODBUS RTU over RS-485
  • LED indicators for visual indication of fault and operating conditions
  • Two selectable battery charge currents.
  • Improved on-board temperature sensor with optional remote sensor
  • Built-in backup power supply 12V up to 12Ah capacity

Product type : EN54-4 Power Supplies
Rated supply voltage : 110V AC ~ 250V AC

Additional information

Weight 210 g
Dimensions 130 × 27 × 150 mm