As a result, the valve position monitor can replace existing solenoid valves and limit switches without changing wiring or signal levels. The monitor can be used on on/off valves and enables valve position monitors to be more easily configured . The Type 3738 includes functions like self-tuning and diagnostics, which opens up a wide range of opportunities for control and asset management. The supply air for the actuator is routed through bores at the bottom of the housing, making additional tubing unnecessary. This makes it suitable for integrated attachment, which facilitates mounting.