The miniature SRM-5AC and SRM-6AC are short range modems connecting full or half duplex asynchronous terminals to computers. Featuring carrier control, the modems can be used in multipoint applications and where end-to-end transfer of a control signal is required. They operate at data rates up to 19.2 kbps with a range of up to 3.5 km (2.2 miles) over 24 AWG. The SRM-5AC is a compatible sub-miniature model of the SRM-6AC, offering the same features in half the size.