Description: Active oxygen not only removes aldehydes and odors, but also kills 99.9% of sterilization, medical sterilization and odor removal, eliminates PM2.5, second-hand smoke, automobile exhaust, formaldehyde, and other bacteria. ...
Features: Waterproof design, suitable for indoor and outdoor. The doorbell can use in office,home, hospital,factory,restaurant or any where you need it. 300 meter receiving distance (In the open area),Stable quality...
Features: 1. First choose the music you want to use. 2. Press and hold the receiver's music button until the receiver rings. 3. Press the transmitter, the receiver rings again,...
Features: 1. First choose the music you want to use. 2. Press and hold the receiver's music button until the receiver rings. 3. Press the transmitter, the receiver rings again,...
