1 x Alarm Siren. WiFi System: 2.4G IEEE802.11b g n Wireless Standard. 1 x Infrared Sensor. Supports 10 common languages. Alarm Battery: 3.7V Lithium Battery x 1 (1000mAh) (Built in). Features: Built in Voice Prompt Function, Supports 10 Common National Languages (Chinese, English, German, Russian, Spanish, Polish, Italian, French, Portuguese, Greek).
eBay