Color Black Material ABS Plastic Quantity 1 Set Remote Control Range 5~8m cm Voice Decibels NO Power Adaptor Yes Power Supply Li-ion Battery (280mAh) Working Temperature 20~55 ? Working Humidity 5%~95% (Noncondensing) Working Frequency 850MHz 900MHz 1800MHz 1900MHz Power Supply AC220V Battery included or not Yes Battery Number 1 Plug Specifications EU Plug (2-Round-Pin Plug) Rated Current 150 mA Rate Voltage AC 220V Packing List 1 x Anti-theft alarm 1 x AC power adapter (2-round-pin plug / Wireless) 1 x USB data cable (62cm) 1 x Plastic adhesive tape 1 x Chinese / English user manual