Single Way GSM Intercom
Single Way Intercom Product Features:
◆ Support 200 sets of numbers, each number can be set in the time period to control the relay to open the door.
◆ A relay output is used to control to open the door, connected when there is the number of incoming users, And it will automatically disconnect at a set time.
◆ After a user calls to control to open the door, it can send SMS to the user about its action.
◆ 000~999 seconds, we can control the relay closing time, 000 indicates: the relay is closed for 0.5 seconds then disconnected. 999 indicate: the relay can be closed until the same number in comes again then the relay will disconnect.
◆ SMS commands can be used to query the current state of the host (relay status and GSM signal value).
◆ SMS can be regularly uploaded for the current state of the host to the first user number.
◆ Use the clock on the module, each time the host sends SMS to itself to correct the time.
single way intercom instuctions (small)