ECU-8 8 Line Master EVC Controller C/W HandsetECU 8 8 Line Master EVC Controller C W Handset The ECU 8 includes a digital display for ease of use and a red telephone style handset. Typically located in a building's control room or a fire services access point, the ECU 4 allows management or the emergency services to communicate via its handset with up to four Type A (fire telephone) or Type B (disabled refuge) outstations (any mix). Like the ECU 8, it can be optionally mounted in a BF359 3 anti