Pressure Transmitters Wire Configuration ~ Learning Instrumentation ... Learning Instrumentation And Control EngineeringThree Wire Diagram - Product Description. The Westek 6503BC 150W 3-Level Wire-In Replacement Dimmer is a universal replacement unit that easily installs in the base of most lamps..
Control a 3-wire zone valve with a 2-wire thermostat | Geek(Wisdom).com After installing the relays between my thermostats and zone valves everything works great! Here's my wiring diagram and some pictures.
2 way switch (3 wire system, old cable colours) | Light wiring Two way switching using a 3 wire control (shown in the old cable colours)