A2 Long Range Stick Node

A2 Long Range Node Series

SF 1


  • Powers sensor and radio for years with an internal battery
  • Optional solar power package
  • Costs less than 60ft of installed conduit
  • Rugged design for demanding outdoor environments
  • Up to 3-mile range
  • Sensor independent
  • 1/2” NPT conduit interface
  • Automatically configures as a star or mesh network
  • Simple to install and Maintain


  • Analog (4-20mA/1-5V) + Digital
  • HART + Digital
  • RS485 Modbus RTU
  • K-Type Thermocouple
  • Cathodic Protection
  • SDI-12

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 3 miles, the system is self installing and self configuring. All the installer has to do is set the check-in frequency using a simple rotary switch, record the radio address, and connect the sensor. This system compares very favorably, from a cost perspective, with installed conduit at distances of 100 feet or more.

Operating Temp: -40ºF to 185ºF (-40ºC to 85ºC)

Humidity: 0% – 100% condensing

Power: 3 X D Lithium battery pack. Field replaceable. Solar and DC input power options available.

Sensor Power: 12.5 or 18V Jumper selectable for 4-20mA current loop, 1-5V, or HART sensors.

  • Analog and HART sensor power is provided from the system, no need for external sensor power.
  • Modbus requires external sensor power

Battery Life: 1–10 years depending on the type of sensor and reporting frequency.

Data Interface: Wireless – available as Modbus registers at Gateway.

Data Update Rates: User configurable from 5 sec to 2 hours.

Supported Sensor Interfaces:

  • Analog (4-20mA/1-5V)
  • Digital input
  • HART
  • RS485 Modbus RTU
  • K-Type Thermocouple
  • Cathodic Protection
  • SDI-12

Radio Power: 500 mW

Antenna Type: External Weather Resistant, Omnidirectional.  Optional N-Connector for remote mounted antenna.

Receive Sensitivity: -105 dB

Frequency: 902-928 MHz License Free ISM Band Compliant with FCC Part 15.

Range: Up to 3 Miles (Line of Sight)

Networks: Up to 65,520 separate networks.

Enclosure: Aluminum, NEMA 4X Rated

Internal Diagnostics: Battery voltage, signal strength, error conditions.