Generation 2 improvements:
1. Much more sensitive to pick up shots
2. Does not pick up double shot
3. Slightly lower 36mm vs 40mm
4. The cord is not in the way of the lock
This is available in 2 models:
1. Simple where you feed it with 12V and then you can connect any siren on the output 12V@9A
2. This also has a built-in battery and a smaller built-in siren. The built-in battery can power an extra siren at 12V @ 200mA over that you have to have an extra power supply.
The battery is charged via USB-C.
Manual: Manual