https://za.rs-online.com/web/c/automation-control-gear/process-control/time-switches/
Time Switches, Digital Timer Plugs & Sockets | RS
time switchesdigital timerplugssocketsrs
https://api.parliament.uk/historic-hansard/written-answers/1947/may/19/venner-time-switches-payment
Venner Time Switches (Payment) (Hansard, 19 May 1947)
Venner Time Switches (Payment) (Hansard, 19 May 1947)
time switchesvennerpaymenthansardmay
https://new.abb.com/low-voltage/nl/producten/system-pro-m/control-and-automation-devices/digitale-tijdschakelaars
Digital time switches - Modulaire DIN-rail producten - System pro M | | ABB
Digital timers can be used as weekly or seasonal time switches for specific automation purposes.
digital time switchesdin railmodulaire