Profile: Exman Electric design and manufacture control systems. We have three control methods such as PLCs, relay and PC computer. Our relay is electrically controlled switch used to open or close an electric circuit. A control system using relay logic is referred to as electromechanical control system. Relays are available in a following styles plug in, timing, stepping, alternating, latch and solid state. Our PC computers are applied in process monitoring, process control, energy management, security system, building automation and relay control.