Size: transmitter: 48 x 23 x 10mm receiver: 43 x 33 x 18mm
Battery: transmitter: 12V, 23A; receiver: CR2032
Frequency: 315/433MHz
These have 6pcs red LED on the receiver, if got the RF, the LED will be rotary flashing
The sound level of the receivers about 80dB
Remote control distance: 15 to 20M
Code: 16384
Working content: sound (BiBiBiBi) + rotary LED flashing
Standby time: 60 to 90 days
If each of the receiver is gone, it can be use a new one to replace