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Wireless Motorhome Alarm System - Cat 1 Non-CANBus Thathcam approved logo

This is a wireless motorhome alarm system suitable for older vans. The Autowatch 457 RLi is supplied with two dedicated alarm remotes, with 'pet mode' facility, and ultrasonic sensors for the cabin area. It is a full Category 1 alarm, Thatcham Approved and ideal for Insurance purposes.

Autowatch 457RLi supplied and fitted for £549* (see notes below)

Wireless reed switch £65 each, Wireless PIR £75, Extra Alarm Remote £55

We can supply and install this Category 1 Thatcham motorhome alarm near Fareham and our customers typically travel from Horsham, Crawley, Petworth, Haslemere, Brighton, Eastbourne, Worthing, West Sussex, Croydon, Leatherhead, Guildford, Woking, Basingstoke, Winchester, New Forest, Lyndhurst, Southampton, Portsmouth, Hampshire, East Sussex, Surry and Dorset areas.

Motorhome Security Device Installed

Autowatch 457rliThis motorhome security device is installed on non-CANBus vehicles. These are generally older vans built before the revolution in wiring took place around 2005 to 2010. Vans built before this time are considered non-CANBus and do not have a central electronic system running all electrics. Please note there was also a transition period where some features are in place, and this all depended on the manufacturer choices at the time.

We can advise you on the best product for your van make and model, please use our contact us page.

Autowatch Four Button Remote

With this alarm you get two four-button remotes. These provide all alarm features and are capable of unlocking the doors by a button press giving remote central locking, however this function relies on the van already having central locking (key in driver's door lock opens all doors).

We can supply and fit door motors to most vehicles should they not already a have the central locking feature. This will cost extra as door motors are required and this can considerably extend the alarm installation time.

Thatcham Approved Motorhome Alarm

Wireless reed switchThe Autowatch 457 RLi is a Thatcham Approved motorhome alarm suitable for Insurance purposes. Thatcham have approved this system for Category 1 Alarm and Immobiliser (CAT 1) use, it is made to a high standard with built-in immobilisation and protection via ultrasonic sensors. This makes it compliant with any UK Insurance company, and we supply a valid MESF certificate of fitting compliance.

With motorhomes customers may need to pay extra for wireless reed switches depending on their type of van. For the device to be compliant all habitation doors or points of entry to the living area need to be protected and we use wireless reed switches. This is a required function if the alarm is fitted for Insurance purposes, and it is the customer's responsibility to make sure the batteries of these wireless sensors are changed regularly.

Wireless reed switches are fitted at a cost of £65 each.

Pet Mode

The Autowatch 457 RLi can also be used to provide the useful 'pet mode'. Here owners can sleep in their van with the alarm still active. Simply press the remote to arm the system and then press the arm button again to disable the interior sensors. Now any movement inside the van will not trigger the system. However, if a door is opened, including those fitted with wireless sensors, this will cause the alarm to trigger.

For a table listing the full button features of this remote please follow the link. Also, in this sister page are links to other 457 RLi Autowatch car alarm information, including alarm trigger codes with their meanings and details on how to programme a new remote to an existing system.

Wireless PIR Sensors

It is also possible to provide a PIR sensor to protect the living area of the motorhome. This may be necessary if the ultrasonics, fitted in the front cabin, are not able to stretch into the larger habitation area of the van.

Additional wireless PIR sensors are fitted at a cost of £75 each.

Autowatch 457 RLi Features:

  • Thatcham Category 1 car alarm - Insurance Approved
  • Compact two 4-button remotes
  • Indicator light flash
  • On-board immobilisation
  • Auto re-arming immobiliser
  • Lock / unlock with ignition
  • Interior ultrasonic sensors
  • Door, boot and bonnet protection
  • Battery back-up siren
  • Silent arm / disarm available
  • Door open audible warning
  • Panic alarm facility from remote
  • Park-light indicator flash (where's my car?)
  • 2 auxiliary outputs (both timed)
  • Interior sensor bypass - 'Pet Mode'
  • Add up to 5 wireless sensors
  • Wireless sensor bypass (where fitted)
  • Possibility to add extra remotes
  • Anti-tamper security housing


More Information:

Read more on the Autowatch 475 vehicle security functions on the remote.

Read about the Autowatch alarm trigger codes.


Please subscribe to our channel here and see more information on motorhome alarms and sensors.


Alternative product:

See details of our Cat 1 motorhome alarm for CANBus derived vehicles.

Read more on the Pandora Camper Pro with LCD pager remote and GPS.


* Extra Parts and Labour will incur a reasonable additional charge for certain vehicles.

We can supply your Insurance Approved wireless motorhome alarm system installed Fareham for Horsham, Crawley, Petworth, Haslemere, Brighton, Eastbourne, Worthing, West Sussex, Croydon, Leatherhead, Guildford, Woking, Basingstoke, Winchester, New Forest, Lyndhurst, Southampton, Portsmouth, Hampshire, East Sussex and Surry customers.