Steren ALA-510 Manual De Instrucciones página 23

9. To synchronize the transmitters, press the
learn button, the status LED will light rerd and
a tone will sound.
10 10
- Then press the panic button on the
transmitter, you will hear another tone if the
transmitter was not synchronized or two tones
if it is already synchronized. Press the learning
button again to exit pairing mode, the status
LED will turn off.