Wireless Waterproof Doorbell 300m Range Home Intelligent Door Bell 60 chimes 0-110db Cordless Calling Bell

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: Turn the power on again after power off, no need to re-adjust and lock the ringtone. 4. The transmitter has no screw chuck design, and it can be waterproof and dustproof without rubber ring. 5.The transmitter USE a 23A12V alkaline battery (not included battery). 6. Receiver voltage: 110-220-240V. 7.The receiver is available in a variety of plugs, US/EU/UK/AU Plug, suitable for most countries. 8.Receiving distance:300 meters in open area. 9.The wireless signal will be affected by obstacles. The more obstacles, the more serious the signal loss. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual