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GMT4 G 2

GMT4G-SRF 4G Dial to open

Product Code: GMT4G-SRF

The GMT-4GSRF is a dial-to-open controller supplied with an enclosure case, aerial, and RF remote that can be installed at any location. All you need is a mobile signal and a 12-24vDC power supply

Simply dial the sim card number to open the gate. 

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inc VAT


GMT4G-SRF offers you the flexibility to control your gate from any location. With a complimentary phone call, or through an optional RF remote, you have the power to activate the relay for a brief moment or keep it on indefinitely, all according to your preference. 

It can be triggered by any incoming number or restricted for use with a maximum of 120 authorized numbers. 

Additionally, you have the option to employ an unlimited quantity of RF remotes, making it ideal for high-traffic scenarios. The programming is secured with a password to ensure your security.



• Phone list for added security with up to 120 stored numbers
• Text for signal strength
• Text for fast/slow relay pulse
• Text to keep/latch the gate open
• RF Key fob activation, button A to trigger - button B to latch
• 2G/4G sim card
• Antenna Supplied
• Keep Sim Active Function
• Dimensions - L 150 x W90 x H45mm
• Dimensions PCB Only - L 125 x W67mm
• Operating Temperature -10 to +40c
• Input 12/24 VDC
• Output Relay 2 Amp N/0 Volt Free
• Quad band Frequency 850/900/1800/1900/2100 MHz
• 2G or 4G either by DIP switch or modem

    This kit contains:


    CDVi CA1R Power Supply
    CDVi CA1R Power Supply
    inc. VAT
    Haydon 12V-1A-PSU inline power supply
    Haydon 12V-1A-PSU inline power supply
    inc. VAT