Xbat-B1 Self-Powered No- battery Doorbell

Xbat-B1 is a door bell set with one press button and one alarm receiver.
The press button use our energy harvesting pressure power generator to generate a wireless signal to the receiver while a finger pushs the button.
The receiver receives the wireless signal with farest distance 100 meter from the button.
Yes, use Xbat-B, no more wiring and no more battery.