selling point
--[ No batteries required] Press the button and kinetic energy is converted into electrical energy. No need to worry about the battery running out of power
--[ Distinguish front and rear doors] By pressing different buttons, the receiver will emit different melodies. It is convenient to know which door has visitors coming.
--[ brilliant lights] Very eye-catching lighting, very suitable for the elderly or deaf-mute people
-- [ 150 meters open distance] The actual distance is suitable for most families
-- [ 60 melodies] Rich melodies provide a more beautiful environment for the family
--[ 5 levels of volume] You can choose the appropriate volume according to your family's needs. A high decibel volume will not miss visitors, and a low decibel volume will not disturb your family's rest.
--[ Free pairing] Buttons support up to 8, and there is no limit on the receiver.
--[ IP44 waterproof] IP44 supports daily splash water. If it needs to be placed outdoors, we recommend purchasing an additional professional doorbell waterproof cover, which will make it safer and longer to use.
--[ Professional after-sales guarantee] We have a complete after-sales team and have shot a lot of usage videos to better help customers. If there is a problem with the product, you can provide us with the video and we will help you

Specification
-- Receiver size: 95x65mm
-- button size: 74x40mm
-- Input voltage: AC110~ 240V, 50/ 60hz
-- volume:0- 110DB
-- melody: 60pcs

Notice:
1. The distance is an open distance. In actual use, the distance will be shortened due to the increase in obstacles.
2. Although the frequency is 433MHZ, due to the incompatibility of the self-generating program, it cannot be used with other doorbells or other products.