Hi, with zero knowledge of electronics I am baffled as to what to buy to do what I need...
What I need is a widget that (1) detects when the mains power goes out (240V) and (2) activates a 12V circuit (battery powered) for a second or two (throws an electromagnet to physically move a mechanical switch). Ideally, I would like a delay of about 5 minutes between (1) and (2).
Considering
https://www.amazon.co.uk/dp/B09YC2Q...olid=1WR5ZBAJ35J0R&psc=1&ref_=lv_ov_lig_dp_it
perhaps in combination with
To get the delay...???
Or (better) is there a single-unit off-the-shelf widget that will do what I want? All suggestions very much appreciated!
What I need is a widget that (1) detects when the mains power goes out (240V) and (2) activates a 12V circuit (battery powered) for a second or two (throws an electromagnet to physically move a mechanical switch). Ideally, I would like a delay of about 5 minutes between (1) and (2).
Considering
https://www.amazon.co.uk/dp/B09YC2Q...olid=1WR5ZBAJ35J0R&psc=1&ref_=lv_ov_lig_dp_it
perhaps in combination with
12V LED Display Adjustable Timer Relay Excellent Performance Switch Module with Industrial Grade Circuit Boards : Amazon.co.uk: DIY & Tools
12V LED Display Adjustable Timer Relay Excellent Performance Switch Module with Industrial Grade Circuit Boards : Amazon.co.uk: DIY & Tools
www.amazon.co.uk
To get the delay...???
Or (better) is there a single-unit off-the-shelf widget that will do what I want? All suggestions very much appreciated!