When designing a wired intercom network, choosing the right main station is crucial. EF-200 dual channel station offers great features at a very compressed price, being perfect for small to medium installations. The unit incorporates an internal worldwide voltage operation power supply, capable of powering up to 50-60* remote stations or beltpacks. In case of short-circuiting at any point of the line, the unit will shut down with an automatic reset once the problem is fixed. The unit offers the possibility of communicating with two independent channels, with separate "TALK" and "LISTEN" buttons for each one and a handy A-B listens to balance control. Also, A+B switch will join line B onto line A when required. EF-200 main station includes a program Input (MIC/Line) provided with "assign" and "volume" controls. Also, this main station incorporates controls to remotely execute actions such as "all Mic-Off" (Mic-Kill) and "all Buzzers-Off" (Buzz-Kill).