Specifications

- 16VAC: must be connected to the secondary winding of the power transformer;

- LINE: must be connected to the phone dose;

- TRBL: output; it goes high if telephone line is not OK;

- DO1 … DO6: automation outputs (upon construction);

- 12VDC:12V output;

- IN1 …IN6: automation inputs.

Note:

If the green LED does not turn on or the GSM communicator is supposed not to

function, do the next:

1. shut the GSM module down (both mains supply and 12V battery), and disconnect

the GSM phone (JR1);

2. shut the GSM phone down;

3. wait for at least 10 seconds;

4. restart the GSM phone;

5. check if the local SMS message in the GSM phone can be read. In case a

“Please wait” or similar type message does not show up, wait for 5 seconds and

try to read the SMS message again. This sequence will be repeated until the

SMS can be read.

6. connect the phone to the GSM module (connector JR1) and power up the GSM

module. The green LED should turn on (after 2…8s).