time switch
noun/ˈtaɪm swɪtʃ/
/ˈtaɪm swɪtʃ/
(also timer switch
/ˈtaɪmə swɪtʃ/
/ˈtaɪmər swɪtʃ/
)- a switch that can be set to start and stop a machine, etc. working at a particular time
（自动）计时开关，定时开关 - The heating is on a time switch.
暖气靠定时开关自动供热。
- The heating is on a time switch.