NEDIS DOORB211WT Wireless doorbell

Wireless doorbell set 
Battery powered transmitter for easy wireless installation
Battery-powered receiver for flexible deployment at home
Wide range of outdoor operation Max. 100 m
An 80 dB doorbell that is clearly audible throughout the House
Integrated 36 melodies so that everyone can find their favorite melody
Hanging hole for wall placement
Maximum transmitting antenna gain 0 dBi
Power supply type runs on batteries
Power Plug, Type C (CEE 7/16)
Maximum transmitting power 10 dBm
Input voltage 3 V DC
IP rating IP44
Input current 0.2 A
Required batteries (included) 1x CR2032
Number of receivers 1 receiver
Number of melodies 36 melodies
Required batteries (not included) 2x AA/LR6 
Transmission frequency range 0-433 MHz
Supported wireless technology 433 MHz