Showing 49–54 of 54 results

Sentinel Pro Monitoring System With Cellular Modem

  • The Sentinel Pro monitors, delivers alarms, and datalogs input/output points the same as the standard Sentinel, but allows monitoring from third-party Modbus sensors, transducers and programmable logic controllers. The system supports Modbus RTU/485 and Modbus TCP. It also adds an additional relay output.
  • Easy-to-install, easy-to-configure monitoring solution for locations with no access to a landline or internet connection.
  • Secure, user-friendly online control panel provides a software-free, anytime, anywhere environment for managing your systems.
  • Store your sensor readings in the cloud to automatically protect against data loss and provide limitless information storage.
  • Receive alarm notifications through a supervised internet connection.
  • Notifies an unlimited number of people by email, text message or voice phone calls in the event of an alarm.
  • Poll Modbus registers from other equipment and twelve external sensors monitor, temperature, humidity, water and more.
  • Manage multiple units, make programming changes and access status conditions using a simple, powerful web-based interface or mobile app.

Click here for User Manual

Click here for Technical Specifications

Smoke Pen


The Bjornax reusable Smoke Emitter Pen is the perfect tool to dispense just the right amount of test smoke, when and where it is needed. A patented smoke-emitting wick is inserted into the clutch pencil and ignited. You can adjust the wick to provide a continuous stream of a light gray to white smoke. The Smoke Pen can be easily extinguished by simply replacing the protective cover. Wick diameter is 5.6mm and will burn for approximately 30 minutes each.

This cool burning, non-toxic emitter is ideal for air balancing, verifying ventilation, testing smoke alarms, test for negative or positive air pressure.


  • Operates like a mechanical pencil.
  • The smoke and wick are non-toxic, with no shipping regulations
  • Excellent method to visualize airflow patterns
  • 6 wicks will provide up to 3 hours of continuous smoke or 360 individual 30 second tests
  • Steady and continuous smoke-stream, you decide smoke-duration
  • Non-turbulent smoke-stream = extremely low thermal interference
  • Helps to reveal the smallest leaks or air-current
  • Particle size is 0.3 to 2.5 microns
  • Does not contain oil, zinc, rubber powder or naphthalene