Here's a weird one. A random AliExpress find that counts significant surge arrester incidents and displays the total on an LED display.
Stunningly low power at just 1/10th of a watt. Also keeps the score in non volatile memory, although the PCB design has legacy component positions indicating that it used to need a backup battery.
Big Clive
2024-05-02 17:18:03 +0000 UTCBig Clive
2024-05-02 17:16:36 +0000 UTCJeff Larson
2024-05-02 14:59:39 +0000 UTCFrank
2024-05-02 12:50:33 +0000 UTCCurtis Hoffmann
2024-05-02 04:14:33 +0000 UTC