Free Shipping to UK & Ireland!
Cart 0

GSM Roller Shutter Remote Control



The C4 GSM Control and Monitoring Systemis ideal for the remote control of Garage Doors and Roller Shutters. It allows up to 512 users to open and close shutters and doors with a free call using just their mobile phone. With the vast majority of people carrying a mobile phone traditional, hard to source and program roller shutter and garage door remote controls can be dispensed with. Adding and removing user telephone numbers can be done off site with simple SMS text messages and a full list of users can be viewed at any time.


The twin relay output can be connected to the roller shutter or garage door open and close inputs.  The relays can be set to alternate between calls; opening the shutter with one call and closing the shutter with the next.

Relay activation can be a timed pulse or a permanent on/off toggled output.  For 'deadman' type shutters which require continuous activation whilst the user watches the shutter, the board features a 'Ring Mode' operation where the output is active whilst the call is ringing.  If the user needs to stop the shutter the call is ended and the shutter stops instantly.

Both outputs can also be fully operated by SMS text message.

The two inputs can be connected to any volt-free switch contacts or open collector transistor outputs.  They can also be connected to existing opto-coupler outputs if the contacts.

SMS messages can be sent instantly when the shutter reaches the open or close position or messages can be delayed to inform property management that the shutter has remained open over a set amount of time (this is achevied using the HOLD command).

Programming is performed by SMS text using real word command like 'add' and 'remove' and can be done remotely at any time.  There are no annoying passwords to remember as you are identified to the system by your mobile number.



A complete list of accepted telephone numbers can be viewed via SMS text message. Additionally the memory can be scanned to find an individual number with the result displayed by an on-board LED and SMS text.


Balance checking is available using the FORWARD, SMS and DIAL commands (see manual).


Please note the board is supplied with a suitable antenna and 10cm SMA cable only.


The enclosure is available as an option.


Anything else I need to know?


All PCBs are supplied with a quad band stub antenna and a PCB to aerial connector cable (~15cm long).  Anrtennas should be mounted outside of metallic enclosures.  The PCB connector is a U.FL connector and the aerial connector is a standard GSM SMA connector shown below (should an extension cable be required).


SMA Conector for use with GSM Alarm Dialer


Our optional sticky backed antenna makes installation quick and simple however this can only be mounted on non-metallic thin surfaces.  Various antennas are available from our wesbite - please see 'Accessories'. 



When deciding on which network to use we recommend that you search on the network provider home page to ensure you will receive a good signal in your geographic location. Please note that this unit does not work with 3G only networks such as 'Three'.  The Site Finder website is very useful for finding your closest mast and network


For indoor appplications the PCB fits into the Hammond 1591B enclosure.


More from this collection