Feature:1. Body Induction: This door sensor alarm adopts infrared body induction, so it plays voice automatically when detect people passing by, induction range up to 6.6yd.2. Customization Voice: This motion sensor doorbell supports customizable voice, which can be changed through USB cable.3. 2 Modes: This motion detector doorbell supports induction and wireless controll, up to 55yd remote control distance.4. Inbuilt 2W Speaker: This wireless doorbell has inbuilt 2W speaker and the volume can be easily adjusted.5. Accurate Induction: This door sensor alarm features intelligent control chipset that ensures accurate induction and sensitive response.Specification:Item Type: Door Sensor AlarmMaterial: ABSProduct Use: Welcome / Safety TipsAudio Output: 2W / 8 OhmsAudio Bit Rate: 16 to 320kbpsInduction Distance: 0 to 6 MetersSensing Range: 120 Degrees SectorVoice Change: Chage via USB CableAudio Format: MP3 Audio FormatInbuilt Lithium Battery Capacity: 500mAh (Battery Included)Remote Control Battery: CR2032 (Battery Included)Battery Capacity: 140mAh.Package List:1 xDoor Sensor Alarm1 x Holder (2 Accessory/Set)1 x USB Cable1 x User Manual1 x Remote Control