Check if the extra unit (Ontech GSM 9030) has contact with the master unit
One push of the button on the extra unit (Ontech Relay 9010) switches the relay but is
also sending information about this to Ontech GSM 9030. This unit acknowledges back
that it has received the information. During this process the red lamp on the extra unit
will flash. The process shall not take more than 3 seconds, if more, the extraunit probably
lost contact with Ontech GSM 9030.