Thatcham S5 Plus Sleeper Edition: Covert Install with Battery Backup The Sleeper Edition takes our Thatcham S5 Plus tracker and hides it properly. Where the standard S5 Plus is professionally fitted, the Sleeper Edition is installed covertly with a concealed secondary battery, so there's no obvious device for a thief to find and strip out — and if the vehicle's main power is cut, the backup keeps it reporting. 4G-enabled real-time GPS tracking Automatic Driver Recognition (ADR) with immobilisation TOTP technology tags for secure driver identification "No Tag, No Start" immobilisation Concealed secondary battery backup for stealth protection Advanced anti-theft alerts 24/7 monitored control room Free nationwide installation £8.99 monthly monitoring fee Suitable for all vehicle types Thatcham S5 Standard Compliance — TSC597 ☎️ Need assistance? Call 01924 976922 Why "Sleeper"? Most trackers are vulnerable to one simple attack: find the unit, disconnect it. The Sleeper Edition is fitted discreetly, and the hidden secondary battery means it can keep transmitting even if the primary power source is tampered with — giving our control room a far better chance of tracking the vehicle through to recovery. Same immobilisation as the S5 Plus You still get the full "No Tag, No Start" protection: the vehicle won't start without an authorised driver's TOTP tag present, alongside real-time 4G GPS tracking and instant alerts if it's moved without one. Installation Fitting is carried out by certified technicians who handle the covert placement of both the tracker and the backup battery, at no extra cost, anywhere in the UK. Who it suits The Sleeper Edition is worth the extra discretion if you're protecting a higher-value or higher-risk vehicle and want the device itself to be as hard to find as possible — not just hard to bypass.
