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External Battery Wireless Smart Siren Alarm & 2 x PIR's

Battery Siren Wireless Alarm (smart) & 2 x External PIR's

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Battery Powered External Wireless Alarm supplied with 2 x External PIR's & a Remote Control, popular for protecting Gardens, Farms & Yards (No Power Required).  




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£ 149.95

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Battery Powered External Wireless PIR Alarm System, supplied with two Outdoor Wireless PIR's, ideal for helping to protect many types of applications including: 

  • Garages & Workshops.
  • Farm Buildings & Yards.
  • Scaffolding.
  • Gardens.

The Siren doubles up as the Control Panel and is Armed & Disarmed using the Remote Controls (supplied) from up to 50 metres away, No Power is needed for either the Siren or PIR's (although you can choose to use a plug in transformer with the siren for locations with easy access to a power supply).


The Wireless PIR's can be mounted up to 150 metres away from the Siren and are powered by a standard PP3 battery, they have a unique rubber cover that makes the detection pattern far more narrow (helping to prevent false alarms from small ground animals) although the aperture can be made bigger should you need a wider detection area.

Mounting the PIR Sensor:

There are two methods of mounting these External PIR's for outdoor operation:

  1. Approximately 1 to 1.5 metres from the ground, with the hood left with the standard size access hole and the PIR aimed horizontally across the ground (this will avoid detection from Cats & Foxes).
  2. 3 - 5 metres from the ground, pointing down towards the ground (angle can be adjusted to suit the application), the front access hole in the rubber hood would normally be opened up to give a wider detection angle.

There is no limit to how many additional PIR's can be added to our range of Wireless Smart Alarms.


The Siren is powered by four standard 'D' type batteries (which will last for approximately 2 years in most applications) although there is an optional plug in transformer for locations with easy access to a power supply.

When activated it has twin Sirens supplying 120 Decibel & bright Flashing Strobe Lights, the duration of these can be adjusted between 1 - 10 minutes during installation.

The Siren has other features including:

  • Tamper Protection.
  • Service Mode (allows customers to silence alarm for any service operations, remote control required).
  • Easy to follow installation instructions.

Also available is a matching Dummy Siren Box, normally fitted to the rear of the property !!

If you are fitting the Sirens to a Scaffold, we can offer Scaffold plates for Easy Installation.

A full selection of Alarm Accessories can be added to this system including:

  • Additional External PIR's (no limit).
  • Internal PIR's (no limit).
  • Internal & External Magnetic Door/Window Contacts (no limit).
  • Remote Controls & Battery Powered Wireless Keypads (a maximum of 99).
  • Battery Powered Wireless Sirens (no limit).
  • Dummy Sirens (no limit).
  • Wireless Vibration Sensors (no limit).
  • Wireless Pressure Mats (no limit).
  • Wireless Water Detectors (no limit).
  • Wireless Smoke Alarm Siren Detectors (no limits).
Quick & Easy to Install, simple to Operate !!

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 Siren & Batteries.
  • 1 x Remote Control.
  • 2 x External PIR's.

Battery Powered Wireless Siren Specification:

  • Frequency: 868 Mhz.
  • Operational Method: Remote Control or Wireless Keypad (or both).Works with all Wireless Smart Alarm Detectors.
  • Limit of Detectors Used: No Limit.
  • Limit of Remote Controls & Keypads: No Limit.
  • Tamper Switch: Yes.
  • Flashing Strobes: Yes (during activation).
  • Siren Output: 120 Decibel.
  • Power Supply: 4 x D Cell Batteries (supplied).
  • Battery Life: 2 Years (normal operation).
  • Mains Power: Optional Plug in Transformers.
  • Service Mode: Yes (remote control required).
  • Siren Duration: Adjustable in Installation & Service (1 - 10 minutes).

PIR Specification:

  • Frequency: 868 Mhz.
  • Detection Distance: 10 - 15 metres.
  • External Use: Yes.
  • Detection Angle: Approximately 20 Degrees (with hood) 110 Degrees (without hood).
  • Power Supply: 1 x PP3 Battery.
  • Transmission Range: 200 metres (line of sight).
  • Mounting Method: Adjustable Wall Bracket (using 2 screws).
  • Power Saving: Yes (if set to 3 minutes between activations).
  • Low Battery Warning: Yes (low flashing red LED when the battery is needing replacement).

Remote Control Specification:

  • 3 modes of Operation (arm, disarm, panic). 
  • Arm: Fully Arms the Alarm System.
  • Frequency: 868 Mhz.
  • Power Supply: 1 x 12v Battery (MN27).
  • Size: 58 x 31 x 12 mm.
  • Operating Distance: 50 metres (line of sight).
  • Max Number of Remote Controls Per Alarm System: 99. 

Siren Battery Level Test:

  • Press Alert Symbol on the Remote Control.
  • The Siren will Beep once.
  • An LED Light will then illuminate (if it is flashing the batteries are getting low, if it is steady the battery is good.