CACAZI DC Battery-Operated Wireless Doorbell Waterproof Intelligent 300M Remote 60 Chimes Cordless Home Outdoor Door Bell Hot

High-concerned chemical：nonePower Source：Battery,DCModel Number：A29-DCDoorbell Type：WireLessOrigin：Mainland ChinaCertification：CE,FCCType：DoorbellsMusic：60 SongVolume：5 Levels VolumeColor：White/BlackFeatures and specifications 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: Turn the power on again after power off, no need to re-adjust and lock the ringtone. The transmitter has no screw chuck design, and it can be waterproof and dustproof without rubber ring. The transmitter use a 12V23A alkaline battery (not included battery,Need to buy separately). The receiver is USB power supply or use 3AAA batteries, more random and convenient.(The battery and usb cable need to be prepared by yourself.) Receiving distance:300 meters in open area. The wireless signal will be affected by obstacles. The more obstacles, the more serious the signal loss. Receiver has 5 levels(can be mute) 0-110db,60 music to choose from. Size:Transmitter 65mm37mm11mm,Receiver: 56mm56mm*16mm.Note The button cannot be placed on an iron door because it will interfere with the signal.How to pair signals? Pairing method: press and hold the volume button on the receiver for about 5 seconds (the light is on), release the volume button, then press the button immediately, the signal is successfully paired.How to modify and lock music? Press and hold the volume button of the receiver before plugging in the power socket. Plug in the power socket until the light of the receiver lights up, release the volume button, press the music button to adjust to the favorite music ringtone, press and hold the volume button again until When the light is on, press the transmitter twice immediately and the music is locked successfully.