Approved fitter · Alarm
Scorpion S37 CAN-Bus Alarm
Thatcham Category 2-1 upgrade alarm with wireless sensors, built for motorhomes.

Fitted at your home · Fixed quote before anything is booked
- Thatcham Cat 2-1
- Approved Scorpion fitter
- No subscription
- Mobile fitting, West Midlands
01 · Overview
What it is.
A CAN-bus upgrade alarm with a built-in radio receiver for wireless sensors, so habitation areas and lockers can be protected too. This is the alarm inside the Defender S7 package.
At a glance
- Thatcham
- Thatcham Category 2-1
- How you authorise
- The vehicle's own remotes, or an optional four-button remote
- Immobilisation
- Alarm immobilisation
- Monitoring
- None
- Subscription
- None
- Vehicles
- Cars, vans and motorhomes
- Price
- Fixed quote for your vehicle, fitted at your home. Nothing is booked until you agree.
Will the Scorpion S37 CAN-Bus Alarm fit your car?
Send the make, model and year. We'll check it against the manufacturer's list and come back with a fixed, fitted price.
02 · Compatibility
Will it fit?
A Thatcham Category 2-1 CAN-bus upgrade alarm that Scorpion names as suitable for motorhomes, with a built-in receiver for wireless sensors in the habitation area and lockers. Compatibility is checked by make and model before fitting.
Send us the make, model and year, or the registration, and we'll confirm it suits your vehicle before we quote.
- Vehicles
- Motorhomes
- Vehicle network
- CAN
- Works with
- Wireless PIR sensors for habitation areas and lockers; An optional four-button remote; A ScorpionTrack S7 tracker, as the Defender S7 package

03 · Features
What you get.
- Built-in receiver for wireless sensors
- Habitation area and locker protection
- Optional four-button remote
04 · Compare
How it stacks up.
| Feature | Scorpion S37 CAN-Bus Alarm | Scorpion S34 Alarm ↗ | Scorpion Defender S7 ↗ |
|---|---|---|---|
| Thatcham | Thatcham Category 2-1 | Thatcham Category 2-1 | Alarm: Thatcham Category 2-1. Tracker: Thatcham S7 |
| How you authorise | The vehicle's own remotes, or an optional four-button remote | Additional radio remotes | Alarm remote |
| Immobilisation | Alarm immobilisation | Alarm immobilisation | Alarm immobilisation |
| Monitoring | None | None | 24/7 theft monitoring with police liaison |
| App | Not stated | Not stated | ScorpionTrack app: live location, alerts, privacy mode, garage and transport modes, directions to the vehicle |
| Subscription | None | None | From £189 a year, or £619 for life |
| Manufacturer warranty | Not stated | Not stated | 2 years (Scorpion) |
| Vehicles | Cars, vans and motorhomes | Motorhomes | Not stated |
Not sure it's the right one?
Tell us the car and what worries you — keyless theft, insurance wording, a van left on the street. We'll recommend a system and quote it fitted.
05 · On the day
What happens.
01
We check your vehicle
Make, model and year are checked against the system before we quote or book.
02
We come to you
At your home. All the equipment travels in the van.
03
Fitted out of sight
Hidden behind the trim, with no visible signs it's there.
04
Set up with you
We set your PIN or pair your tag, and show you service mode before we leave.
Before you enquire
Scorpion S37 CAN-Bus Alarm, answered.
01Why is it suited to motorhomes?
It has a built-in receiver for wireless sensors, so the habitation area and lockers can be protected as well as the cab.
02Do I need an extra remote?
No. It works from the vehicle's own remotes, with an optional four-button remote if you'd like one.
03Can it be paired with a tracker?
Yes. With a ScorpionTrack S7 tracker it becomes the Defender S7 package, monitored 24/7.
Related
More from Scorpion.

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View Scorpion S30 Alarm
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Thatcham Category 2-1 upgrade alarm that uses the car's own remotes.
View Scorpion S32 Alarm
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Scorpion S34 Alarm
Category 2-1 upgrade alarm with extra radio remotes, suited to motorhomes.
View Scorpion S34 AlarmRead before you choose
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Fitted at your door in
Check Scorpion S37 CAN-Bus Alarm fits
Tell us about the car.
Send the basics. We will check compatibility and contact you by your preferred method—no open calendar and no obligation.
