Long Battery Life: This doorbell has a built-in rechargeable Lithium battery to supply electricity, and when the battery is low, the doorbell receiver will sound a voice prompt. We recommend that you fully charge the doorbell before using it for the first time. The doorbell receiver battery can be used for 4 to 5 days on a full charge, and the transmitter battery can be used for 4 months on a full charge.
SANZUCO Doorbell: The intercom doorbell is made of high-quality ABS material and can withstand various harsh weather conditions at operating temperatures between -4 ° F and 140 ° F. This wireless doorbell also features IP55 waterproof and LED lights.