Description:1.The button supports up to 20PCS, and the receiver supports up to 100pcs.
2.If multiple buttons are paired with one or more receivers in the same system, each button can be set to a different ringtone.
3.Power-off memory function: Plug in the power again after power off, no need to re-select and lock the ringtone.
4.The transmitter without screw chuck design to achieve waterproof and dustproof.
5.The transmitter USE a 23A12V alkaline battery (not include battery).
6.Receiving distance:300 meters in open area.
7.Volume:5 levels(can be mute) 0-110db.
8.Melody:60 pcs.
Specification:Brand: CACAZI
Model: A88
Weight: 150g
Receiver voltage: 110V/220V
Dimensions: Transmitter:72x46x21mm,Receiver:92x62x32mm
Color: Black/White
Package Included:1*Transmitter
1*Receiver
2*Doorbell sticker
2*Double sided tapes
2* Screws
