Battery-Free Wireless Doorbell
No Battery|Wireless|Strong Signal|Energy Saving
No Battery
The doorbell transmitter is embedded with micro generator which can collect energy when press.No battery inside
Durable
Embedded with micro generator = At least 160 batteries(Based on 20 Years)
Maintenance-Free
No need to change the battery frequently, save money, and eco-friendly.
Waterproof
A doorbell with no battery has strong waterproof function
Strong Signals
Each press will send out three signals.The strong signals can pass through 3 walls and get strong feedback from every press.
48 Wonderful Songs
Abundant songs and 6-level volumes are Available
Refined Shape Small Size
Never affect the use of other electrical appliances
Multiple Security protections
Eliminate many Security Risks
Lowest power consumption design, no heat, safe and reliable.
Anti-Surge Anti-Lightning Anti-Static
