Features:
1) Wireless battery operated doorbell with a small name card on the transmitter, 64
DIY codes and 8 sounds set at the transmitter
2) LED indicator and a 29mm built-in speaker in the receiver
3) Operating range is up to 100m on the open air
4) Transmitter uses 1pc 12V 23A battery (included) and receiver uses 3pcs 1.5V AA
batteries (not included)
5) OEM is welcome

Packing:
Blister packing