Check the listing for details. Simulate anti-theft alarm simulator light imitation DIY KIT K171. Condition: New. Listed at 11.70 USD. Alarm simulator light imitation DIY KIT This constructor allows you to assemble a small and effective device - an alarm simulator, the only task of which is to periodically turn on the LED as in real security systems. This may be enough to scare away a potential thief if for some reason you cannot install a full-fledged security alarm. Also, the device may be interesting for gaming and educational purposes.A feature is the ability to power both from an external source and from a 9 volt battery. When the main power fails, the switchover to the battery will occur automatically. Because to the use of a low-power version of the 555 timer, the device can continuously work up to 1 month from a single battery. When buying, you will receive a set of electronic components for self-assembly.There is no battery in the constructor. Specifitation Battery Type: 6LR61, 6F22 (Type: 9 volt battery) Supply voltage: 4 - 16 V Current consumption: