It's a very practical visual and audible siren. It will alarm when low voltage or AC cut off(if you connect 12V battery into this siren. standard package not include such battery). Also it have confirmation beep when the system is armed or disarmed. With tamper switch, high volume feature, the siren is good to install in residentialarea,office, factory and shops.

Feature:

Power supply: 12V/1A

Working current: 500mA

Package Content:

1pc  Wired Outdoor Sound and Flash Siren