CACAZI Wireless Doorbell Waterproof 300M Remote Battery 2 Button 1 Receiver Intelligent Home Calling Bell

Features The button supports up to 20PCS and the receiver supports up to 100pcs If multiple buttons are paired with one or more receivers in the same system each button can be set to a different ringtone Power off memory function Plug in the power again after power off no need to re select and lock the ringtone The transmitter without screw chuck design to achieve waterproof and dustproof The transmitter USE a 23A12V alkaline battery not include battery Receiving distance 300 meters in open areaVolume 5 levels can be mute 0 110dbMelody 60 pcsSize Transmitter 72x46x21mm Receiver 92x62x32mmThe button cannot be placed on an iron door because it will interfere with the signal Package includeds 1 x Receiver2 x Transmitter1 x User Manual Details pictures