Timer Module with Built In Battery Charger is designed to facilitate the interface between and addressable detection system and an automatic gas release system. The Timer Module has 2 inputs for connecting isolated contacts from an addressable control module to trigger the release. Timer Module comes with a built in power supply and Battery charger ensures independent operation without loading the main FAP. Timer Module with Built In Battery Charger is provided with inputs for manual release, abort discharge and pressure or weight loss signals and output to solenoid and alarm, fault contacts for feedback via monitor modules to main FAP.