Explain:
Y-40A Receiver
1. Can work with 40pcs 1-key or 3-key transmitter in max.
2. 40 indicator light stands for the status of 40 call buttons, indicator light flickering stands for the number calls.
3. The volume is adjustable.
4. Long working range.
Working voltage:DC12V
Working current:
Working Frequency:433MHz
Dimension:286x130x28mm