Details Connects TW beltpacks to two channels of a multi-channel intercom system Combines Channels A and B from 2 cables to 1 cable Supports up to 15 RS-703 beltpacks Item Code TWC-701 Technical Specifications Power Requirements Input Voltage: 20-30V DC Input Current: (idle) <= 30mA Current Trip: 1.6A Weight lbs (0.503kg) Environmental 32° to 122° F (0° to 50°C) Dimensions 2 x 4 x 5in (HxWxD) (51 x 101 x 127mm)