Sentry-1 Wireless Door/Window Sensor with Data Logging

Model: Sentry-1 

The iMatrix Sentry-1 is a two-piece wireless door/window sensor, including the main body and a magnet and tamper switch. The Sentry-1 runs on battery and wirelessly reports Open/Close status as well as counts the number of entries on your doors.

The Window/Door state can be uploaded to the iMatrix Cloud to log history, set alarms/ alerts and provide reports for remote monitoring. This sensor can be used in stationary or portable applications and provides accurate, comprehensive logs sent directly to your smartphone or iMatrix Cloud.

  • Get 24 hours a day monitoring with real-time alerts, logs, and reports
  • Connect to iMatrix Cloud for World Wide Access
  • Manage multiple sensors in multiple locations
  • Set and receive alerts directly to smartphone or optionally use the Wi-Fi Micro gateway (sold separately)
  • Organize  thousands of sensors with multiple groups & locations
  • Upload sensor data to the iMatrix Cloud automatically in real-time  with iMatrix SensorMonitor Smartphone App
  • Setup sensors in one step – scan QR code with App and you’re monitoring


iMatrix Sentry-1 Wireless Door/Window Sensor with Data Logging

Model: Sentry-1 

The Sentry is a wireless magnetic sensor with a 3M double-sided adhesive mount on your window or door. The device has a tamper switch that prevents accidental removal, and the battery is replaceable. Sentry is ideal for wirelessly monitoring climate-sensitive environments where refrigeration doors could be left ajar, causing significant inventory loss. It offers 24 hours a day monitoring, real-time alerts, logs, and reports.


  • Wireless Magnetic Switch
  • Measured states: Open/Close/Tamper
  • Dimensions of body: 55 x 26.2 x 13mm  (2.16 x 1.0 x 0.51in)
  • Dimensions of magnet: 38.5 x 12.5 x 11mm (1.5 x 0.49 x 0.43in)
  • Weight 26.6 grams (0.92 oz)
  • Waterproof rating IP66 (waterproof , dust proof)
  • Broadcasting range: 100 meters (328 feet)
  • Battery: CR2032 Coin Cell 230mAh
  • Battery lasts 13 months (by default)
  • Based on BLE technology
  • Stores up to 6 months of data
  • Upgradable to Massive Mesh

Cloud: Next Step to Controlling Your Cold Chain

Try iMatrix Cloud & App to bring monitoring of your cold chain to a next level

  • Manage multiple sensors via one interface
  • Set warning levels and receive alerts directly to smartphone or option for Wi-Fi gateway (sold separately)
  • Observe configurable graphs and updates of all your sensors
  • Organize hundreds of sensors with mulitple groups & locations
  • Set unique name and photo for each sensor
  • Get reporting and log files for record keeping and HACCP compliance