TM0024 Page 5 of 33 Issue 2.011.4 INTERNAL POWER SUPPLY UNITThe repeater panels are supplied complete with an internal power supply unit, whichis designed to meet the requirements of EN54-4. The Power supply provides a 2.5amp at 24v dc supply output to both the repeater panel and the battery output.This unit includes a variable mains input which is capable sensing the incoming ACmains voltage, for range between 110v and 270v. The AC mains input is protectedby a ceramic mains input fuse rated at 3.5 amps, which is easily accessible.The unit is supplied complete with a battery temperature lead which requiresattaching to the internal batteries of the control panel. This connection compensatesthe charging of the batteries with respect to the ambient temperature of theenclosure.The power supply incorporates a set of status LED indications, which are positionedupon the power supply unit. These indications operate when a fault condition isdetected upon either the power supply unit or the internal batteries, these indicationsare as follows:1. Loss of mains power.2. Loss of standby power.3. Reduction of battery voltage.4. Loss of battery charger.