Power Source: Plug EU US UK<br />Type: Doorbells<br />Certificate: CE，FCC，Rohs<br />Detail: 1 Outdoor Transmitter 1 Indoor Receiver<br />Use of premises: Home office villa hospital school factory<br />working frequency: 433MHZ<br />Ring Tone: 38 ring tones<br />Waterproof : yes<br />DIY Supplies: Electrical<br />Color: white，black<br />Power Source: AC，Battery<br />Model Number: A10BB<br />Power supply: 110V-220V-240V<br />Doorbell Type: Wireless<br />Receiving distance: 300M Remote (in open area)<br />Highlights: <br />1.Touch the button configuration， superheterodyne learning code on the code mode <br />2.The transmitter without screw chuck design to achieve waterproof and dustproof<br />3.Double-sided stability of the PCB， the chip standby sleep up to micro-level<br />4.The transmitter 12V23A battery factory pre-installed<br />5.The use of microprocessor control， double-sided PCB micro-power design<br />6.The frequency of 433MHz， can be customized other frequencie<br />7.Receiving distance:300M(open area)<br />8.Volume:3 files(can be mute) 0-85db<br />9.Ringtones:38 pcs<br />10.Transmitter size:75X51X20MM <br />11.Receiver size:95X65X24MM<br />Package Included:<br />1*Outdoor Transmitter <br />1*Indoor Receiver<br />1*Instructions