RRP800 - Fire Truck / Safety Vehicle Intercom, a robust design that's simple and speedy to set up. Features include a 2-8 place dual radio intercom employing Quick Lock™ technology for easy connections, along with a port for cell phones possessing audio gain. Enjoy clear audio with separate microphones and 100% shielded RF housing. Dimensions stand at 5.9”L x 3.9”W x 1.6”H. Quick Lock™ jack boxes facilitate installation and allow expansion from 2 positions to 6 positions and to pump panels. Additionally, extruded aluminum construction reduces RF interference, and audio IN, record out connections plus LED with a 'stuck-mic' indicator are included.