New BT Wireless PIR & Internal Siren Shed & Garage Alarm System

BT Shed PIR & Internal Siren kit

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Popular Battery Powered BT Shed PIR & Internal Siren kit System, both with 130 Decibel Siren's, armed & disarmed using remote control from up to 50 metres away. Ideal Alarm for Sheds, Caravans, Garages, Boats, Holiday Homes. 

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£ 49.40

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Our Popular Battery Powered BT Shed PIR & Internal Siren kit System, both with impressive 130 Decibel Siren's, they are Armed & Disarmed using Remote Control from up to 50 metres away.

Please Note: This is a Non-GSM Alarm for customers not wanting Telephone Calls or Text Messages !!

These are an ideal DIY Alarm for many installations, the most popular being:

  • Sheds, Garages & Workshops.
  • Caravans
  • Home Garden Offices.
  • Static & Park Homes.
  • Holiday Homes & Apartments.
  • Boats. 
  • Temporary Homes.
  • New Builds.

The traditional battery powered Alarm similar to this is designed to work as a stand alone Alarm with a single built in Siren, but these are prone to an intruder simply attacking them (as the PIR needs to be in view) before raising to much attention.

This Alarm System allows you to fit the Siren in locations that the intruder cannot reach, this may be:

  • Hidden away in the same building as the detector, totally out of reach (which is very easy to achieve).
  • In a different building, up to 50 metres away (could even be inside your home, ensuring you wake up).

The Wireless Siren is powered by 2 x AA batteries and has a built in 130 Decibel Siren, it is designed to trigger 15 seconds after the PIR Siren has been activated, adding to the discomfort of the Intruder, very easy and fast to install.

BT Internal siren

The Wireless PIR is powered by 3 x AA batteries, it has a built in 130 Decibel Siren and has a 30 second exit delay (plenty of time to leave the premises) and a 5 second entry delay (most customers will disarm the alarm before entering the building.


The PIR is weather rated to IP65, therefore ideal for damp buildings during the winter months, it has a 8 metre detection range and can be operated from up to 50 metres away using the remote control.

It has a low battery warning LED, when the batteries are low the LED will remain ON.

The Remote Controls have two very simple buttons, Arm & CLR (Disarm) and can be used from 50 metres away allowing you to easily control the Alarm, you can use up to 9 with any single system. 

BT Remote

Supplied with a 'This Shed is Alarmed' window sticker which sticks to the inside of the glass.

This shed is alarmed sticker

You can add additional Alarm accessories to this system (which can be used in a single network) now or in the future, options include:

  • External Solar Siren.
  • Additional Internal Sirens.
  • Magnetic Door or Window Contacts.
  • Additional PIR Alarms.
  • UltraPIR GSM Alarms (battery or mains versions).
  • Ceiling PIR's.

Very Affordable, Highly Recommended Battery Powered Alarm Range

Need Advice on choosing the best System for your personal application or Help after you have Purchased one, then please contact

us by:

Telephone: We are still available in the old fashioned way, give us a call on 01604 589414 or 01604 758438 to talk to a real person, we are happy to give you Friendly, No Obligation advice (lines open 8am to 5.30pm Monday - Thursday, 8am to 5pm Friday).

Email: If you don't have time to call us, then send us an email to

Personal Visit: Some customers find it far easier to come and meet us for a Friendly, No Obligation Consultation (click here for full details).

  • 1 x Wireless Battery Powered PIR, Mounting Bracket & Batteries.
  • 1 x Wireless Internal Siren & Batteries.
  • 1 x Remote Control & Battery. 
  • 1 x This Shed is Alarmed Sticker.

PIR & Remote Control:

  • Alarm Detection Type: PIR (passive infrared detector).
  • Arming & Disarming Method: Remote Control.
  • Working Distance between PIR & Remote Control: 50 metres (line of sight).
  • Transmission Distance to additional Wireless Sirens: 50 metres (line of sight).
  • Built in Siren: Yes (130 decibels).
  • Exit Delay: Yes (30 seconds).
  • Entry Delay: Yes (5 seconds).
  • Siren Duration: 60 seconds (remains fully armed, until disarmed by remote control).
  • Detection Range: 8 metres.
  • Detection Horizontal Coverage: 120 Degrees.
  • Detection Vertical Detection: 90 Degrees.
  • PIR Power Supply: 3 x AA Batteries (supplied).
  • Remote Control Power Supply: 1 x 3v Lithium Coin Battery.
  • IP Rating: IP65.
  • Size of PIR: 68 (W) x 108 (H) x 36 (D) mm.
  • Size of Remote Control: 75 (H) x 45 (W) x 12 (D) mm.
  • PIR Battery Life: 12 - 18 months (normal use).
  • Warranty: 1 Year.


Wireless Internal Siren:

  • Built in Siren: Yes (130 Decibel).
  • Power Supply: 2 x AA Batteries.
  • Working Wireless Range: 50 metres (line of sight).
  • Size: 63 (W) x 85 (H) x 21 (D) mm.
  • Colour: Cream.
  • Siren Duration: 60 seconds (but remains fully armed).

This Shed is Alarmed Sticker:

  • Self Adhesive (on the front of the label designed to fit inside a window).
  • Size: 80 (W) x 60 (H) mm.
  • Colour: Red Print on White Background.