AKOYU White Doorbell 1 Receiver 1 Button

The receiver also retains your settings even if there is a power loss. There is no need for wiring or electrician installation when using it since its installation can be completed within 1 minutes: plug the receiver into the socket, ready to go.

QIACHIP EV1527 433MHz Remote Transmitter 2-Button 1-Pack

COMPATIBLE WITH QIACHIP RECEIVERS: Specifically designed for QIACHIP 433MHz Receivers with EV1527 fixed code support. Always verify your receiver model before purchasing. Receiver is NOT included. Batteries are pre-installed.