EMOS P5728 Wireless Doorbell

Button range: Up to 180 m
Main unit power supply: 3× 1.5V AAA (not included)
Transmission method: Wireless
Number of melodies: 52
Waterproof button: Yes
Option to add another button: Yes, max 6
Optical signaling on the button: Yes
Optical signaling on the bell: Yes
Special features: No
Pairing method: Automatic pairing (self-learning)
Black colour
Additional (spare) button: P5728T
Button power supply: 1× 12 V A23 (included in the package)
Number of receivers in the package: 1 pc
Maximum ringing volume: 90 dB
Volume control: Yes, 5 levels
Number of buttons in the package: 1 pc
Transmission frequency: 433 MHz
Sales packaging: 1 pc., blister