Specifications:- * Control key switch * Mains healthy indicator * Continuous alarm signal * Built-in battery * Polarity protection for battery * Push buttons for Evacuate, Reset and Alarm silence * Monitored alarm circuits for both open and short circuit * Individual sounder circuits for zones (optional) * Indicators for charger fault and battery fault * All controls are on front fascia * Knockouts on top and bottom sides for easy installation * Main supply - 240 V AC +/- 10%, 50/60 Hz * Battery supply - 24 V DC (Sealed Lead Acid) * Glass fuse protection - Main supply, Charging voltage, Sounder circuit, Reserve battery connection * Auxiliary relay contacts -30 V DC, 1 A, NO/NC