Model: JY-2005-A wireless .Widely used at home, shop, school, hospital, factory, warehouse, bank, government, etc. Features: 1. DIY project . High sensitive and strong anti-interferential 2. Record message for ten seconds . Program six groups of telephone numbers 3. Mute alarm and audible alarm is at user\'\'s option. Separately arm/disarm for the certain detected areas 4. Back-up rechargeable battery available for 36 hours when power is in failure 5. Add or reduce additional spare parts to the main panel is according to user\'\'s option Specification: 1. CE, CCC certified 2. Working frequency: 315MHz/433MHz 3. Power adaptor: Input AC 110V; 220V; 230 - 240V; Output DC 9V, 300mA 4. Stand-by current: 5. Alarm current: <150mA