300M Black USB or Battery Powered Home Waterproof Wireless Doorbell Smart Home Door Bell Chime Kit LED F Security Alarm

300M Black USB or Battery Powered Home Waterproof Wirele Doorbell Smart Home Door Bell Chime Kit LED F Security Alarm

Features:

1.The on supports up to 20PCS, and the receiver supports up to 100pcs.

2.If multe ons are paired with one or more receivers in the same system, each on can be set to a different ringtone.

3. Power-off memory function: Turn the power on again after power off, no need to re-adjust and lock the ringtone.

4. The nsmitter has no screw ck design, and it can be waterproof and dustproof without rubber ring.

5.The nsmitter USE a 23A12V alkaline battery (Sold without battery).

6.The receiver is 3*AAA batteries or USB power supply (USB only for power supply and not for charging) , more random and convenient(Sold without battery and power supply)

8.Receiving distance:300 meters in open area.

9.The wirele signal will be affected by obstacles. The more obstacles, the more serious the signal lo.

10.Receiver has 4 levels(can be mute) 0-110db,36 music to choose from.

11.Size:nsmitter76*46*20mm,Receiver 95*62*25mm.

NOTE:The on cannot be pd on an iron door because it will interfere with the signal.