Radio Bell Button with Receiver

Radio chime with optical and acoustic signaling consisting of transmitter (with call button) and receiver (with acoustic/optical diffuser)
Fully battery operated
Working frequency 433 Mhz
Range in free field: 100 m
Transmitter: water resistant (IP44 protection degree)
Operation with 3 V battery (included)
Receiver: ringtone with selection from 36 melodies
Call signal selection (acoustic, luminous, acoustic + luminous)
Volume adjustment
Operation with 2 AA 1.5 V batteries (not included)
Product in blister 180x220mm
Blister format: 180x220 blister