Features:
* Easy to install&operate
* 433.92MHz Radio Frequency
* 4 or 12 selectable musical tones
* water-resistant Bell Push
* Approx.50 meters(in open space) operational distance
* Multiple digital codes to effectively avoid interference
* low power consumption,6-month battery lefe for 10 activation per day
Model WDB-2004
Musical Tones 12
Flashing Light No
Battery Power
Main Unit 3×1.5V AA
Remote Control 1×12V A23