1. wireless doorbell to remind you of your guests coming by lovely songs.<br> 2. 38 songs to choose from, and can be changed at the Press of a button.<br> 3. easy to use, just place the sensor at the entrance for your entry and the receiver inside your home.<br> 4. Great for home, office, hotel, store, etc.<br> 5. alerts you when someone enters your entrance, walking, door or business, such as visitors, vehicles, intruders, animals or children who come or go.<br> Receiver operating voltage: 110v-240v<br> Transmitter operating voltage: 4.5v 3x aaa batteries (not included)<br> Working range: up to 70 meters<br> Infrared detection distance: 3-7 meters<br> Button control receiver :<br> Music source: 38 different songs<br> Volume adjustment: high, medium, low<br> Voice: can be configured with light and voice / with light and no voice<br> How to use:<br> 1. Place the correct batteries in the detector.<br> 2. make sure the batteries are placed in the proper positions.<br> 3. Mount the detector correctly through the front door, window frame, sidewalk, walk, yard or anywhere you need.<br> 4. then turn on the receiver and adjust the volume to the high or low position.<br> 5. The remote detective system is now operating with infrared detection technology.<br> 6. Place the receiver in an easily accessible place.<br> 7. When the detector detects movement, the receiver will make an audible sound & the LED light will flash.<br> 8. Wait 30 seconds after calling Detective & Receiver to activate.<br> 9. Install both units 3 feet above ground level for optimal performance.<br> Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on<br> size:76 x 80mm<br> Material:ABS<br> colour:white<br> Voltage: AC220V<br> Package Contents:<br> 1 x PIR Sensor<br> 2 x Receiver<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the pictu