Features:Using high quality imported probe, not omission Hi-Fi speaker, with 38 music Home use, and use conveniently Light in weight easy to install and use With PIR sensor, high sensitivity Description:Used in banks, supermarkets, offices, convenience stores, shops, hotels, factories and homes and other places Infrared induction design, tring convenience of your life Increase pleasure and security Specifications:Material: PlasticSupply voltage: AC110-240VWorking range: Up to 70MColor: WhiteReceiver size: 76*80*33mm (Plug NOT included), 76*80*53mm (Plug included)PIR sensor size: 80*59*45mmPackage size: 100*85*90mmPackage included:1 x Infrared Induction Door Bell SetNote:Due to the difference between different monitors, the picture may not reflect the actual color of the item We guarantee the style is the same as shown in the pictures Please allow slight measurement deviation caused by manual measurement, thank you for your understanding includes:Please refer to the English description