Device Certification - S5 vs S7
At Tracker Vehicle Security we want to make securing your vehicle as easy as possible and understand some of the terms and categories can be confusing. Often insurance companies will tell you that you need a Thatcham approved categorized device but wont tell you what that category means or why they are advising it.
We are always happy to answer any questions so if you would like to know anything please get in touch here.

What is Thatcham Security Certification?
Thatcham Security Certification is a robust verification programme for the assessment and recognition of automotive security products. The certification concentrates on verifying functionality design and performance of a product.
Each product is rigorously tested to predefined criteria established by Thatcham Research and, where appropriate, its partnering organisations. This testing is intended to provide confidence in the products functionality, performance and an objective evaluation of its capabilities.
All of this is monitored and periodically reviewed throughout the duration of the product certification to ensure that the levels of functionality and performance are retained.
Thatcham offer a list of approved devices and have plenty more information here.
2 Main Certifications
S5
Category S5 trackers represent the highest standard of vehicle tracking systems recommended for high-value and high-risk vehicles. These trackers are equipped with advanced technology to offer unparalleled security features.
- Advanced Location Tracking: Utilising GPS, GSM and VHF (Very High Frequency) signals, S5 trackers ensure precise location tracking, even if the vehicle is hidden or in an underground parking lot.
- Driver Recognition Technology: A distinctive feature of S5 trackers is the use of driver recognition technology, such as ADR (Automatic Driver Recognition) cards or tags. This technology alerts the system if the vehicle is moved without the recognized driver, providing an additional layer of security against sophisticated theft methods, such as key cloning.
- Remote Immobilisation: Some S5 trackers offer remote immobiliser features, allowing authorised personnel to safely disable the vehicle’s ignition system remotely if a theft is confirmed, preventing further movement of the vehicle.
- 24/7 Monitoring: S5 trackers are monitored around the clock by dedicated control centres, ensuring immediate action in the event of a theft, which significantly enhances the chances of vehicle recovery.
The primary benefit of Category S5 trackers is their advanced security features, making them an ideal choice for luxury cars, high-performance vehicles, and those at significant risk of theft. Their comprehensive protection often leads to preferential insurance premiums due to the reduced risk of theft and higher recovery rates.
S7
Category S7 trackers, formerly known as Category 7, offer a robust level of security suitable for a wide range of vehicles. While not as feature-rich as the S5, they provide essential protection and peace of mind.
- Reliable GPS Tracking: S7 trackers utilise GPS technology to offer reliable vehicle tracking and location updates, enabling efficient vehicle recovery in case of theft.
- 24/7 Monitoring: Similar to S5 trackers, S7 devices are monitored around the clock by control centres that coordinate with the police to recover stolen vehicles.
- Lower Cost: One of the main benefits of S7 trackers is their affordability. They offer a cost-effective solution for vehicle owners who want enhanced security without the premium price tag of an S5 tracker.
- Insurance Compliance: Installing an S7 tracker can still lead to reduced insurance premiums, as it demonstrates a commitment to vehicle security.
S7 trackers are best suited for vehicle owners looking for a balance between security and cost. They provide essential tracking capabilities and peace of mind, making them an excellent choice for a wide variety of vehicles, from family cars to vans and motorcycles.