Size (length*width*height): 10cm x 10cm x 10cm

Features:

1. Easily select volume and music, smart design
2. Self-learning code function:choose your favorite music. Then Pairing method: New style pairing method: Hold down the music key for 5 seconds (old style pairing method: press and hold the volume key for 5 seconds.) When you hear the dingdong and see the lights flash, immediately press the button, the signal is paired successfully. You can try 2 methods.
3. Compatible with 12V23A alkaline battery(NOT include battery)
4. Receiving distance: 300 M (in open area)
5. Volume: 3 files(can be mute) 0-110db, ringtones: 60 pcs
6. Transmitter size:75X51X20MM.
7.Receiver size:95X65X24MM.
8. Receivers Rated voltage : AC 110V-220V -240V.
9.Working frequency: 433MHZ,can be customized other frequencie.
10.The use of microprocessor control, double-sided PCB micro-power design.

11.Color : Black

11.Buttons can set different music for distinguishing front and rear doors