The RANGER transmitter is sensor agnostic, working with not only flow sensors, but all types including pressure, temperature, and level, to name a few. The RANGER connects quickly and easily to your flow meter with sensor and is ready to send your flow data wirelessly – all without the effort and cost of trenching or cabling. Paired with your existing cloud or the SignalFire Cloud, the RANGER system is the simplest way to access all your sensor data from one platform. Whether you’re converting an existing system or building a new one, going wireless with the RANGER means you can go live and start accessing your flow data almost immediately.

The RANGER is compatible with a wide range of existing technology and powered by a battery pack that lasts up to 8 years or optional solar panel or DC (external) power source, making monitoring with the RANGER transmitter easier and more affordable. Once the RANGER transmitter is connected to your flow sensor, your system is powered and ready to deliver data directly to the cloud, where you can easily access it from your laptop, PC, or mobile device and start realizing the potential of insight.

RANGER IoT cellular transmitters integrate the latest in wireless technology, enabling direct connectivity from any sensor to a cloud platform. With ever-changing communication protocols, the RANGER platform makes it easy to stay on the forefront of technology. The modular, plug-and-play nature of the system provides flexibility as well as time and cost savings, allowing room for your network to grow and change as you add or change sensors and as wireless technology advances.

The RANGER features an expansion module to support additional sensor protocols including HART, Modbus, and SDI-12.  The RANGER firmware can also be updated over-the-air to support new features or sensor types creating a future-proof solution.  — so you spend less time in the field and more time in control.

Technical Specifications
Operating Temperature

-40°F to 185°F (-40°C to 85°C)


0% – 100% condensing

Input Power


  • Battery pack: 4 D-cell Lithium Thionyl Chloride, 76AHr
  • Optional solar power
  • Optional 10-30 VDC input


  • 1 Latching Relay Output (2A @ 30Vdc; 0.3A @ 110Vac; 0.5A @ 125Vac). Failsafe & local automation configurable
  • 2 Digital Inputs report state, total counts, frequency (2kHz max), volume total with K Factor
  • Analog Input (1-5Vdc or 4-20mA). Configurable for flow totalizing mode
  • Provides a configurable 13V or 18V to attached sensor(s). Maximum current of 60mA
expansion module options
(One module possible per ranger)

2AI1DI Module:  Adds 2 additional analog inputs and one digital input

Modbus Module:  Modbus RTU – RS485 up to 8 slaves, 32 total registers (read/write)

HART Module:

  • Supports 1-15 HART sensors in multi-drop mode
  • Reports 4 process variables, field device status, unique identifier and device tag for each HART device
  • Scan and configure HART IDs with the Ranger, separate HART modem not required

SDI-12 Module:

  • Monitors and powers one to eight SDI-12 sensors at 13V, 60mA max
  • Reads/reports up to 16 measurements
  • Supports reading the default measurement and all additional measurements from connected SDI-12 devices
Battery Life

Up to 8 years of battery life

Data Interface

LTE CAT M1 / NB-IoT, auto-selectable

Cellular Radio Power


Antenna Type

LTE w/ Internal GPS


Industrial polycarbonate UV Rated; IP64

Safety Rating

Class 1 Division 2 Certified, Groups A, B,C, D. Temperature Code T5. Certified to CSA C22.2 No. 213:2017, Conforms to UL 121201:2017, CE Approved

Electrical Connection
  • Pluggable terminal block, 16-30AWG screw terminals
  • Local Micro-USB Configuration Port

1 lbs (0.6kg)

Estimated monthly data usage

Check-in interval dependent

  • 1 min = 27 MB
  • 5 min = 5.4 MB
  • 15 min = 1.08 MB
  • 60 min = 0.27 MB
Cellular specifications
  • LTE band support:
    Cat-M1 / NB-IoT: B1, B2, B3, B4, B5, B8, B12, B13, B14, B17, B20, B25, B26, B28, B66
  • Supports 4FF SIM type
  • Power saving features: eDRX
  • Secure socket using TLS
  • PTCRB Certified
Test Drive the RANGER

For a first-hand experience with a RANGER installed in the field, click the link below.