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2G GSM-CTL-DC High Amperage Remote Control Device - 2 x Relays - DC (12-24V) Powered

Quick Overview

2 x 30 amp relays. Requires DC power to operate.

Availability: In stock

Regular Price: $169.99

Special Price: $126.99

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AT&T and other U.S cell carriers no longer support the 2G network. This device will no longer work in the USA in most areas. Please purchase a 3G or 4G unit instead.

This is a wireless GSM remote control switch that connects to 2G GSM cell phone networks that exist in almost every country on earth.

This device does not come with a SIM card. Please contact your local cell provider and purchase a standard 2G/3G SIM card, and activate it on a pay as you go plan.

The device has two independent relay switches. The first relay switch is activated by calling the SIM cards cell phone number. The device will then reject the call without answering and trigger the first relay. There are no call costs incurred when dialing the unit; it will recognize an authorized telephone number calling it and reject the call without answering. The first relay has two modes, momentary and latching mode. When receiving a phone call in momentary mode, the first relay will turn on for a pre-programmed amount of time. This time period can be programmed by the user and can be anywhere from half a second to many days. When receiving a phone call in latching mode, the device will simply change state. If they relay was on before, it will be turned off. If it was off before, it will be turned on.

Both relays can be controlled by SMS either independently, or at the same time.


  • Working voltage is 12-24V DC @ 1 amp (1 amp is recommended, but 500 mA is suitable)
  • Real-time & interactive control
  • Quad Band (Supports 850 MHz, 900 MHz, 1800 MHz, 1900 MHz).
  • 2 x Relays that can handle up to 240V @ 30 amps
  • Dimensions: 200mm x 125mm x 82mm (7.87 inches x 4.92 inches x 3.23 inches)
  • Operating temperature: -25 °C to +60 °C, -12 °F to 140 °F
  • Relays do NOT supply power; they only relay power.
  • Small standby power consumption (< 20mA @ 12V)
  • Relay's remember last state in the event of power loss.
  • Optional password protection to prevent unauthorized access to the device.
  • Two operating modes (momentary and latching relays) for the first relay
  • One relay is relay is activated by telephone call, the rest are activated by SMS
  • Fine grained timer control (programmed by milliseconds)

Additional Information

Input Power Type DC
Input Power Voltage 12-24V
Number of Input Relays 0
Number of Output Relays 2
Generation N/A
North America UMTS N/A
North America GSM Frequencies N/A
North America FDD LTE N/A
Europe UMTS N/A
Europe GSM Frequencies N/A
Europe FDD LTE N/A

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  1. Excellent Product Review by Donald Larson

    Purchased one of these in February of 2012. I installed it to control an irrigation pump in a remote location, and it's been working well for the past year. I just recently ordered another one for a second pump we installed a month ago. Shipping was extremely fast (arrived in 2 days after I ordered).

    The instructions aren't great, but their support was really responsive, so they had me set up quickly. For U.S. customers, note that this does not work with AT&T GO Phone plans. Use standard AT&T or T-Mobile SIM cards. (Posted on 4/21/13)

  2. super Review by Kougioumtzis Dimitrios

    super (Posted on 4/20/13)

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