clipsal switch mechs

https://kilo-wiki.win/index.php/Choosing_the_Right_Low_Voltage_Garden_Cable_for_Safe_Outdoor_Wiring

Clipsal switch mechs are the internal mechanisms behind the light switches and power points in many Australian homes. They can wear out over time, causing a switch to feel loose or not click properly. Replacing just the mech is often cheaper and easier than changing the whole faceplate, keeping your existing wall plates looking consistent.