Conceived and designed for use in the automated access sector and for the remote management of various devices, it is equipped with two adaptable and configurable relays (timed or bistable) according to requirements.
Gate opener
The RL1 relay drives the device, with impulsive 3s as the factory setting. All users registered and stored in the memory activate the RL1 output, and therefore open or close the gate, making a brief call to the telephone number of the DGSM-3A SIM. The device will immediately end the call. The RL1 output can be configured using the configuration strings in the instruction manual, which can be updated using the ‘F’ SMS command.
Alarm management (e.g. boiler)
When the IN1 or IN2 input is activated, an SMS alert is sent to enabled numbers and a brief call (ring) with immediate notification is made. The enabled numbers are those containing the special characters ‘!’ (alarm AL1, input IN1) and/or ‘?’ (alarm AL2, input IN2) in the description.
By default, the IN1 input is configured as normally open (NO), with a delay time of 3 seconds. Instead, the IN2 input is configured as normally closed (NC), with a delay time of 3 seconds. The inputs are configured using the configuration strings, and can be updated using the ‘F’ SMS command.
General external device (e.g. irrigation system management)
The DGSM-3A module can control external devices via SMS commands; the RL2 relay is configured as bistable by default. In this way, the contact can be opened or closed using the following SMS commands:
- To activate RL2 (close the contact): “O.0000.RL2.1”
- To deactivate RL2 (open the contact): “O.0000.RL2.0”
The number that these SMS are sent from must be registered in the SIM phone book as master number (initial special character ‘#’ in the description). If the DGSM-3A module is switched off, the output is deactivated. The RL1 and RL2 relay outputs have the following electrical characteristics:
- Max 30Vdc 0.5A (15W)
- Common contact between RL1 and RL2
The RL2 output can be configured using the configuration strings, which can be updated using the ‘F’ SMS command.
