Short haul modem MA-12

Westermo’s short haul modem MA-12 is used for data communication over long distances and in harsh environments. The MA-12 is used to connect equipment with RS-232/V.24 interfaces. Westermo's ±10 mA balanced current loop (W1) transmission technique makes it possible to transmit data up to 18 km at low data rates. At shorter ranges transmission rates up to 38.4 kbit/s can be achieved. All Westermo’s modems using the ±10 mA current loop (W1) technique are compatible with each other. 
        
    Use this unit when the transmission distance is greater than 15 metres
    RS-232/V.24 interface
    Protects connected units from lightning/transients
    Units provide totally transparent data communications
    Very low delay time through units
    Units can transmit a single status signal
    Used to connect equipment on different earth potentials
    Guarantees reliable long-distance communication