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BT Wireless PIR, Internal & External Sirens Shed & Garage Alarm System

BT Wireless PIR, Internal & External Sirens Alarm System

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Battery Powered Wireless PIR, Internal & External Siren Alarm System, all with 130 Decibel Siren's, armed & disarmed using remote control from up to 50 metres away. Ideal DIY Alarm for Sheds, Garages, Garden Offices & Holiday Homes. 


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£ 90.14

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A recommended Battery Powered Wireless Alarm System, which is Armed & Disarmed using Remote Control from up to 50 metres away.

This impressive Alarm package includes:

  • BT PIR Alarm (with built in 130 Decibel Siren).
  • Battery Powered Wireless Internal 130 Decibel Siren.
  • Solar or Battery Powered External 130 Decibel Siren.
  • Remote Control.

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

  • Sheds, Garages & Workshops.
  • Home Garden Offices.
  • Mobile Caravans.
  • 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 two additional Sirens into a locations that the intruder cannot reach, these may be:

  • Inside & outside of same building as the detector, both totally out of reach.
  • Inside & on a different building all together up to 50 metres away (this could be inside the house or on the back the house). 

External Solar Siren:

The Solar Powered Siren & Strobe, has a built in 130 Decibel Siren, Flashing Strobe & Tamper Switch, for use with our BT Wireless Shed & Garage Alarms.

It can be used in 2 ways:

  • Solar Siren: when mounted in a location open to daylight, it can be used with its built in re-chargeable Lithium Battery, which is charged & maintained by the built in Solar Siren. 
  • Battery Siren: when used in a very sheltered location with minimal access to daylight, it can be used with standard AA Batteries, batteries would still last 9 - 12 months (depending on the number of activations). 
It is fully weatherproof and has a slow flashing strobe light during standby and rapid flashing strobe lights during activation, it has also been designed to activate 15 seconds after the detector Siren has been activated, adding to the discomfort of an Intruder.
Internal Wireless Siren:
The Internal 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.
Wireless BT PIR:

The 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).

It is 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. 

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

  • Additional Internal Sirens.
  • Magnetic Door or Window Contacts.
  • Additional PIR Alarms.
  • UltraPIR GSM Alarms (battery or mains versions).
  • Additional Solar Sirens.
  • 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 PIR, Mounting Bracket & Batteries.
  • 1 x Remote Control & Battery.
  • 1 x External Solar Charged Siren, Strobe & Built in Lithium Battery.
  • 1 x Internal Wireless Siren & Batteries.

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.
Solar Charged Siren & Strobe:
  • Built in Siren: 130 Decibel.
  • Siren Duration: 3 minutes.
  • Built in Flashing Strobe: Rapid (activation).
  • Power Supply: 1 x Built in Lithium Battery (supplied).
  • Optional Battery: 4 x Alkaline AA Batteries (for low level light locations).
  • Battery Life of Alkaline Batteries: 9 - 12 months low light applications (normal use).
  • Weatherproof: Yes (IP-65).
  • Anti-Tamper Switch: Yes.
  • Wireless Range: 50 metres (line of sight).
  • Size: 110 (W) x 170 (H) x 28 (D) mm.
  • Warranty: 1 year. 

Internal Battery Powered Wireless 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).