The VR1210/1200 series of circuit selector is a series of 3/2 valves with one output and two inputs and two pneumatic signals. The output is always supplied by a high-pressure inlet . The VR12**F series is a series of switches used to check the lines of the pneumatic pressure signal system. Connection is possible at any point and push-in fittings simplify connection. The timers of the VR2110 series combine an adjustable orifice and a determined flow rate, which allows them to transmit the pneumatic signal after the set time has elapsed.