Cobra 4138 Thatcham Cat 1 Alarm


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SKU 4138alarm Category


Cobra 4138 Thatcham Cat 1 Alarm with immobiliser Supplied and Fitted


  • Insurance Category 1 approved
  • High security ACE remote controls with auto learning
  • Single engine immobilisation circuit
  • Immobiliser passive arming
  • Alarm passive arming
  • High power back up battery siren
  • Automatic re-arming in case of accidental disarming
  • Panic Alarm
  • Anti hi-jack (programmable in automatic and/or voluntary mode)


The Vodafone formally known as Cobra 4138 Thatcham Cat 1 Alarm offers all the reassurance and high quality you’d expect from Cobra. Coupled with the fact it’s been certified by Thatcham it’s credentials to secure are assured.
Offering such features as the Anti Hijack Facility to bring about a quick and safe shutdown of the vehicle it stops criminals in their tracks.
The Cobra A4138 offers brand new security aspects including the automatic hazard light warning feature which activates the hazard lights automatically in the event of emergency braking.
The Panic Facility features on the key fob which activates the alarm’s siren should a scenario arise which requires such action. In a personal attack situation depressing secondary button on the remote will sound the siren for 30 seconds (or until the secondary button is depressed again). Also featuring an Emergency Override function should you need to disable the alarm manually, the Cobra 4138 Thatcham Cat 1 Alarm has all situations covered.


With our professional installation team of expert fully qualified auto electricians, our engineers will make sure you and your vehicle receive the right care and attention to detail, We will always leave your vehicle looking as good as new. Before we leave, We will ensure that you are 100% happy with the product installed and demonstrate fully on completion how it works.

As soon as the installation has been ordered, we will arrange for the engineer to install at a location and time to suit you.

We can install your product at any location convenient to you anywhere in the UK. The process is as follows:

  1. Place your order.
  2. We will contact you within 24 working hours to arrange your installation.
  3. We aim to install your product as quickly as possible after ordering. However, this is dependent on both customer vehicle and installation engineer availability.


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