The bike alarm is triggered by motion. It’s a standard off-the-shelf seat tube bike alarm, armed/disarmed by a fob. My modification was to beef up the output power to operate the flashing lights, motor shorting relay, sonalert, and the time-delayed electric theft deterrent. I can’t be shocked unless I’m riding around for 30 seconds with lights flashing, alarm blasting, and the motor acting as a regenerative brake. That’s why there’s a time delay.

There’s also an Airtag in the seat, but I’d rather deter the thief than have to track down the bike.