Sound insulation for electric relay

摘要

An electric unit, such as a room thermostat has a circuit board and an electromechanical switch mounted to the circuit board. The circuit board and the electromechanical switch are housed in a casing. The casing is filled with a sound insulation material with the electromechanical switch embedded in the sound insulation material in order to dampen the click sound produced by the communication of the electromechanical switch.