Super long receiving distance, environmentally friendly, energy saving <br>Easy to install without having to seek the help from professionals <br>Unique product design <br>Material: Plastic <br>Color: White <br>Receiver: 9 x 6 x 3 cm (LxWxH)  <br>Transmitter: 8.6 x 8.6 x 3 cm (LxWxH)  <br>Receiver button: music selection, volume control <br>Transmitter button: doorbell <br><br>Parameters: <br>1. Working mode: wireless digital remote control <br>2. Receiver operating voltage: DC 3V, 2 x AA batteries (not included) <br>3. Static current: not more than 0.45mA (ultra low power consumption, prolong battery's life) <br>4. Working frequency: 315MHZ or 433.92MHZ (according to customer's requirement) <br>5. Remote / receive distance: not less than 120m (open area) <br>6. Transmitter operating voltage: 12V (battery model: 23A 12V)<br>7. Transmitter working current: not more than 15mA (counted on 20 times per day, one high quality battery can be used for one year) <br>8. LED indicator: Press the transmitter button and the LED indicator turns on, transmitter starts working, the receiver gets commands and sounds out music to remind you that you have a guest. The blue LED of receiver flashes along with the music. <br><br>1 x Transmitter <br>1 x Receiver <br>1 x Adhesive <br>2 x Screws <br>In blister package<br /><img src="http://img6.eachbuyer.com/x9/p100/eb4081_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4081_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb4081_6.jpg" />