Features: 1.Motion Sensor Alarm: The voice prompter adopts PIR body induction sensor, with high sensitivity, and the sound of 1W speaker is clear and loud. 2.Recordable Voice: Support multi segment voice recording, the total time is 8 minutes, if you don't like it, you can delete the voice. 3.Function: Motion sensor detector will trigger the sound remind you when someone or animals enter and move in the monitored area. 4.Multi Uses: Body induction alarm can be used as entrance welcome alarm during the day, and used as antitheft detector at night. 5.Battery Powered: Supports music selection and volume adjustment, and it is powered by 3pcs AAA batteries (not included), convenient and quick to replace. specification:Item Type: PIR Motion Sensor Alarm Material: ABS Power Supply Mode: DC 5V 1A or 3pcs AAA batteries (can not be used at the same time) Sleep Current: 20uA Playback Current: 130mA Sound Output Power: 8 Ohms 1W Induction Range: 0 to 4m / 0 to 13.12ft Alarm Sound: 75dB Battery: 3pcs AAA Batteries (Not Included) PackageList:1 x PIR Motion Sensor Alarm 1 x Manual 2 xHookandLoopFasteners 1 x Set of Bracket (2pcs)