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Harvest Portable Intruder Alarm - THIS IS NO LONGER AVAILABLE

Portable Intruder Alarm - Book

The Harvest Portable Intruder Alarm incorporates a passive infrared sensor (PIR) and GSM cellphone to form a battery powered portable and discrete alarm system.

The system can run for up to 12 months on six AA batteries. When triggered the system sends out alarms via text messages and can be programmed with up to three message recipients.

One of the key benefits of the system is its ability to operate with no mains power and no phone line. All you need is GSM cell phone coverage.

With such incredibly low power consumption we believe this product to be truly unique.

Possible applications include monitoring holiday homes, private boats, builders sheds, farm sheds and aircraft hangers. We make custom versions to accept an external input from devices such as a door switch, hidden micro trip wire or boat bilge alarm float switch

This product is under active development and new features will be added over time.


Portable Intruder Alarm - Picture Frame

Key Features

  • No phone line or power needed
  • Super low power consumption and will operate for 12 months on 6 AA batteries (under 100 uA while active)
  • Onboard GSM cellphone
  • Programmable alarm numbers
  • Secure key switch or hidden switch to enable and disable device
  • Entry and exit delay
  • Sends a warning message out when the battery needs replacing
  • Can be programmed to send weekly test messages
  • Typically lasts 12 months on a $20 prepay card
  • Small enough to be disguised into a number of inconspicuous packages

For information on different versions available please click here.


For more information and pricing, please contact us.