Wireless Doorbell Waterproof Self-powered Button Smart Door Bell Sets Home Welcome Outdoor House Chimes UK EU AU US Plug Receiver

-Self Powered,No Battery Required Energy saving and environmental protection. Don't worry if the battery has power, so Don't miss important visitors -Waterproof IP44 Waterproof Grade Don't worry about extended use in heavy rain -Stronger Signal ,Further Distance Signal is stronger, enhanced wall penetration and propagation distance -Easy Installation No wiring required, no tools required you don't necessarily have to make holes or damage anything. -Better Chips, Advanced Technology Advanced A12 microprocessor, more anti-interference.The neighbor's doorbell will not interfere with our doorbell.