<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><span style="font-size:18px;">Technical parameters:<br>-power supply: CR2032 battery（Not included）<br>-power consumption: 0.25W<br>-Music: 60pcs<br>-ringtone volume: maximum 120db<br>-weight: 120g<br>-Signal transmission distance: more than 350 meters (open space)<br>-RF frequency: 433MHZ<br>-working temperature:-20 c ~ 60 c<br>【60 music tracks selection】<br>The doorbell has 60 melodies for you to choose from. There are four adjustable levels of doorbell volume, which are ''large, medium, small and silent'' gears.<br>【120 dB Super Volume】<br>The maximum volume of the receiver can reach 120 decibels, and the bell can resound through the whole house without missing the visiting guests.<br>【Wireless signal range over 350m】<br>This wireless doorbell can receive signals from a long distance. The super penetration wireless signal of household wireless doorbell provides an ultra-wide coverage of 350 meters, which can pass through steel doors, wooden doors and walls. Note that the distance is an empty distance.<br>【Distinguish front and rear door functions】<br>When the receiver is paired with two or more transmitters, different ringtones can be set. The receiver needs to select the music before operating the pairing, at which time the transmitter can lock the currently selected melody. When there are two or more doors in your home, this function can help you to distinguish which door has arrived at the first time.<br>【IP44 waterproof grade】<br>The waterproof grade reaches IP44, which can meet the daily use (it is recommended to use it with waterproof cover for outdoor use, and it needs to be purchased separately).<br>【1 kilowatt-hour for one year】<br>The power consumption of the receiver is as low as 0.25W, and it only needs one degree of electricity a year.<br>【Suitable for various scenes and diverse people】<br>This household wireless doorbell adopts RF433 high-frequency electronic technology, which has strong anti-interference ability and ensures that multiple sets of equipment can work independently without crosstalk. This wireless doorbell is very suitable for classrooms, offices, hospitals, restaurants and factories.<br>【Easy installation and use】<br>Just plug the receiver into the socket. Installation method of transmitter:Double-sided adhesive and screw installation</span><br><br><br><br><br><br><br></div></div>