Features Improved audio circuitry Alert tone Selectable "Push-to-Talk" feature for noisy environments 28V DC talk battery 3 watts of paging power Compatible with some two-way paging ports Background music input May be integrated into existing paging system (1) 25AE paging horn included 25-50 foot talk-back range Optional second speaker may be added Specifications Power: 120V AC/13.8V AC 1.25A, UL listed adapter provided Dimensions: 133mm x 89mm x 44mm (5.25" x 3.5" x 1.75") Environmental: 0 degC to 32 degC (32 degF to 90 degF) with 5% to 95% non- condensing humidity Talk Battery: 28V DC Speaker: (1) 25AE 8 ohm 5 watt horn included, (2) maximum Maximum Speaker Run: 152 m (500 ft) maximum, 18 AWG Amplifier: 3 watt output power Connections: 10 pin screw terminal strip