Linbell Wireless Doorbell No Battery Waterproof Automatic Generation Intelligent Pairing Doorbell

Features : Easy to code Free pairing The doorbell built-in code system, can according to needs at any time to increase or decrease the transmitter / receiver, Free 1 to 2, 1 to 3, 2 to 2, or even more. Signal forwarding function Traditional doorbell receiving end can only receive signal and the product at the receiving end signal sending module, when the receiver after receiving the signal can also to other receiver to send signal, so that the signal coverage and intensity can be increased significantly. Warm tip: please do not put the transmitter installed on the metal door, because the metal absorption of radio frequency signals. Specification : Doorbell Button: Weight: 65g Frequency: 433.92MHz Outdoor distance: >80 meters Indoor distance: >30 meters (the wall) Transmit power: 10dBm Standby power consumption: 0W Size: 83mm x 83mm x 8mm Receiver: Weight: 80g Host power supply: AC 85-265V Standby power consumption: 0.12W Size: 83mm x 83mm x 21mm Package includeds : 1 x Doorbell Button 1 x Receiver 1 x Set of Installation 1 x User Manual Details pictures :