Modbus Stick

The SignalFire Remote Sensing System™ is a flexible, adaptive radio networking system that seamlessly integrates analog and digital sensors. With a range of up to 4 miles, the system is self installing and self configuring.  This system compares very favorably, from a cost perspective, with installed conduit at distances of 100 feet or more.



  • Potted electronics, a high-gain antenna, and a multi-mount aluminum base all contained in a high-impact polycarbonate “Stick.”
  • Provides a wireless interface to remote Modbus sensors
  • RS485 Modbus RTU interface (RS232 also available)
  • Supports multiple Modbus devices
  • Automatically reads and transmits sensor registers at user-definable intervals
  • Outbound capability for sensor Modbus register updates
  • Writes Modbus registers
  • Message-forwarding / mesh-networking capability
  • Rugged design for demanding outdoor industrial environments
  • Range up to 4 miles
  • Simple to install and maintain
  • Class 1 Division 2, Temp Code T5, Groups C&D.  Conforms to ISA 12.12.01 and UL 916, Certified to CSA C22.2 No. 142 and CSA C22.2 No. 213



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