<p>Convenient installation, good doorbell, no damage to the wall, high-quality double-sided adhesive tape, one touch, one tear, one buckle, can complete the installation, stable and firm, no damage to the wall, can also support the installation with screws1 Transmitter with 2 ReceiversHousehold loud volume, 7 colors of bright light reminder, long-distance wireless flashing doorbell, suitable for families,can also call with one button to protect their familiesLow power consumption, environmental protection and energy-saving design, low power consumption, only 7 AA batteries, 3 batteries for each of two receivers, and 1 battery for each transmitter. It can be used for 3-5 months, without potential safety hazards, no fever, safety and confidence, and is suitable for various environments, and it will not affect the use in rainstorm and typhoon daysThe transmitter and receiver are connected wirelessly, and the wireless signal is transmitted. When the button is pressed, the receiver emits beautiful music and flashes seven colors of lights at the same time, which is very convenient for hearing and vision at nightRing the doorbell, the volume is not missed, the volume of level 4 is adjustable, and you can hear it within 150 square meters. No matter how big the house is, you will not be afraid, and you will not let go of every friend who visits your home</p> Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!