Always finding it difficult to provide maintenance for your doorbell? You rather do without･_・yet when someone knocks on your door･_・you cannot hear them. Fret not･_・this battery-less doorbell with a long lifetime is here to stay! Just plug in the adaptor and VIOLA!

Long lifetime - 20 years no need to change battery!

Connectivity lasts till 150m far

One adaptor capable of connecting to more than one doorbell

Strong penetration - can penetrate through 3 metal walls and 3 brick walls and still work!

Waterproof design - can work under -40degrees environment and under rainy environment

Dimensions: doorbell - 2.6cm x 4.4cm x 7.9cm･_・adaptor - 3cm x 4.9cm x 7.9cm