The Atom Single Input GSM Communicator is a simple yet powerful solution for all your security equipment notification needs.
Once triggered, the GSM communicator immediately makes a call and sends a text message to the stored phone numbers. As a result, you get fast and reliable alerts that ensure total peace of mind.
The Atom GSM communicator can be connected to any device that provides NO/NC volt-free alarm signals, such as intrusion alarms, fire alarms, DVRs, refrigerators, and more. It can also function as an SMS alert device by connecting it to a door using a sensor.
Application Areas of Atom – GSM Communicator
Connect to Door
Use the Atom GSM communicator as a compact SMS alert device for doors. Connect it to a door sensor, and it instantly sends an SMS or makes a call to your mobile when the door opens or closes — just the way you want.
Connect to Fire Alarm
If you are looking for a device that can send instant fire alarm event notifications to your mobile through SMS, the Atom GSM communicator is your ideal choice. Simply connect it to the fire alarm relay. When a fire event occurs and the relay switches ON, the GSM communicator instantly sends SMS alerts or makes calls to your stored phone numbers.
Connect to Burglar Alarm
Connect the Atom GSM communicator to an intrusion or burglar alarm relay to receive real-time notifications. When an intrusion event triggers the alarm relay, the GSM communicator instantly sends SMS alerts or calls, so you can respond without delay.
Connect To DVR’S
Most DVRs have dedicated terminals for alarm outputs. The Atom GSM communicator can be connected to these DVR alarm output relays.
When specific conditions activate the relay (these vary by DVR brand), the GSM communicator instantly sends an SMS or calls your preset numbers.
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Atom – Single Input GSM Communicator
If you’re looking for a simple and reliable device to get instant updates on your door’s open or close status via SMS or call, the Atom Single Input GSM Communicator is the perfect choice.
How It Works

The Atom is a compact GSM communicator with a single trigger input. It requires a SIM card and a 6–12V power supply. Programming the Atom is easy and can be done through simple SMS commands or an Android app.
Programming steps include:
- Registering an Admin number
- Storing up to 4 user numbers and 1 Admin number
- Setting the alert condition — Door Open, Door Close, or both
- Choosing the alert type — Call, SMS, or both
Connecting a Magnetic Sensor
Connect a magnetic sensor to the Atom’s input as shown in the diagram. Mount the sensor properly on the door — for detailed steps, see: How to Connect a Magnetic Sensor to a Door.
Once the wiring is complete, power on the Atom and activate it. Based on your programmed settings, you’ll receive instant alerts when the door status changes. For example, if you’ve set an “Open” alert, you’ll get a call or SMS whenever the door opens.
Where else can be Active Atom GSM Communicator used ?

It can be used with any devices which provides no/nc voltage free alarm signal to trigger the Atom device.
ATSS Chennai, India — Your trusted source for GSM Alert Devices





