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Sigma S30 Thatcham Category 1 Car Alarm

Sigma S30 Thatcham Category 1 Car Alarm

Sigma S30 Thatcham Category 1 Car Alarm

(9 Reviews)  Review this item
Sigma S30 Thatcham Approved Car Alarm System with optional Key Theft Protection*
✓ Supplied with 2 Remote Controls.
✓ Dual Circuit immobiliser with passive arming.
✓ Thatcham & Insurance Approved.
✓ Ultrasonic Protection of Cabin area.
✓ Door & Boot protection.
✓ Can operate vehicles locking.
Price includes fitting at your location *
RRP £499.00

The Sigma S30 is our number one selling, full Thatcham Category 1 Alarm & Immobiliser. This insurtance approved alarm is popular for pre 1992 vehicles where no security was fitted by the vehicle manufacturer. It is a very popular Thatcham approved alarm for imported vehicles, project cars and also Motorhomes

Benefits from the following Security Features:

  • Thatcham Approved to Category 1 Status 
  • Door, Bonnet and Boot Protection
  • Ultrasonic Interior Protection (Option of Microwave for convertible vehicles) 
  • Battery Back-Up Siren
  • MK2 Keypad - Offers Key Theft Protection
  • Tri Colour LED
  • Full Central Locking Control (for vehicles with FULL central locking)
  • Passive Arming Dual Circuit Immobiliser

Some of the more Personal Features include:

  • Auto Re-Arm with Locking - Allows the re-arming of the alarm and automatic locking of the doors after 60 seconds of disarming the alarm (Overridden if a door, bonnet or boot is opened)
  • Safety Lock - can be activated to allow locking of the doors upon the engine starting and unlocking on the ignition turning off.
  • Intelligent Ultrasonics - Illiminates false alarms by self adjusting to suit the arming conditions 
  • Panic facility from the Remote Control


  • Mainly used on vehicles without a transponder immobiliser, pre 1992-94 or imported vehicles.
  • It is also suitable for vehicles that have rare use such as motorhomes or project cars.
  • The Key Theft Protection* facility sets it apart from other systems. 

If you are not sure simply contact us for free friendly advice.

We provide a mobile installation service to towns and cities throughout Yorkshire including: Wakefield, Pontefract, Castleford, Dewsbury, Leeds, Doncaster, Huddersfield, Bradford, Sheffield, York, Hull, Goole at a time and location to suit you.



First class service/Subaru Impreza
ReviewerPhillip Michael Robinson / FromHull / Date
I cant recommend Safe and Sound Vehicle Systems highly enough. Mark provided all the info i was seeking, prior to that i had some difficulty. The sigma S30 was fitted so easily by John, who also was a very nice guy. So all in all, very happy with the new alarm system.
Land Rover Defender
ReviewerMr J Houghton / FromHarrogate / Date
After having a letter from the Police land on the mat I thought I best beef up security. I cam across Safe & Sound on the internet and they clearly knew my vehicle and what was best. I booked in there and then, they were a pleasure to deal with, nothing was a stress and the S30 is nice and simple to use. A big thumbs up from me.
Land Rover Defender
ReviewerMr M Lacket / FromWakefield / Date
Clearly a very knowledgable company with a fantastic customer service. I had this installed at my home address with no issue at all. It works well and the tracker was a cheap addition for at the time. The app is very good and works well. Thank you.
Land Rover Defender
ReviewerMr B Thompson / FromLeeds / Date
I can certainly sleep a lot better now! They turned up when the said and did a very tidy job. I am really impressed and would certainly recommend Safe & Sound.
Land Rover Defender
ReviewerMr M Jay / FromYork / Date
Brilliant from start to finish. Company is great and the alarm is ace, escpecially the key theft protection! I would highly recommend these guys!
Fitted to Land Rover Defender 90
ReviewerJames Rollinson / FromYork / Date
Had this installed with central locking and the tracker offer too. I believe I got a great price from a company who were very easy to deal with and the products are of obvious quality and work perfectly. I'll be sure to recommend you on the Landy forums. Cheers.
Defender S30
ReviewerMr E Tompson / FromRibblesdon / Date
I had this installed by one of your enginners earlier in the week at my home. The engineer arrived early and immediately got to work installing the alarm. He was clearly very confident with my vehicle which was pleasing to see as it's my pride and joy. After explaining how the key theft protection feature worked I decided have it activated which your engineer did for me and went on to explain in detail how it works. I also opted for the offer of having the smartrack tracker fitted at the reduced cost - I love the fact now when the alarm goes off I receive a call from the tracker monitoring centre. Brilliant. Overall I not only recommend the Sigma S30 Alarm but the company too. I will definately be using you again should the need arise... I might go for the central locking next. Thank you.
Subaru Impreza
ReviewerDoug Hestle / FromLiversedge, Bradford / Date
I found your company on the Thatcham website as referred to it by my insurance company. Your prices were competitive however on on looming back I believe I've got incredible value for money in the alarm. The key theft protection feature is brilliant and while it can be awkward on the dark nights I do believe it's invaluable. Your engineer took the time to show me the full features of the system and how it all worked. Overall I'm very impressed and would highly recommend the product and the company to others.
Plenty of Features
ReviewerMr I Standing / FromWibsey, Bradford / Date
Had this system fitted to my Land Rover Defender 90 along with central locking too. It has a nice loud siren and the arm disarm tones are quite discreet. I really like the automatic locking of the doors when you start the vehicle. Will definately recommend this to my fellow Defender 90 owners.
Additional Key Fobs AvailableYes
Additional Siren AvailableYes
Battery Back UpYes
Dash Board Mounted LEDYes
Central Locking ControlYes - Vehicle Dependant
Door, Bonnet, Boot Protection Yes
Number of key fobs2
Suitable for Convertible VehiclesYes - Requires Microwave Sensor
Thatcham Category1
Thatcham / Insurance Certificate ProvidedYes
Ultrasonic Sensors IncludedYes
Warn Away ProtectionYes - Dual Zone Microwave Required
Passive ImmobiliserYes - Dual Circuit
Auto Re-Arm & Door LockYes
Hazard Light FlashYes
Immobiliser CircuitYes x 2
Key Theft ProtectionYes - Keypad Included
LED ColourRed
Microwave Sensor CompatibleYes - Single & Dual Zone
Paging System CompatibleYes
Tilt Sensor CompatibleYes
Warranty3 Years
Thatcham ApprovedYes
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