Mini Wireless I/O Module

Mini Wireless I/O Module


  • One Analog Input (0-5VDC)
  • Two Digital Inputs (dry contacts)
  • Two Relay Outputs (2 SPDT)
  • Acts as a repeater for other SignalFire wireless devices
  • Wide Range DC Power Input (6-36VDC)
  • Low Power Consumption
  • Class I, Division 2 Certified
  • DIN Rail Mount with plugable screw terminal blocks
  • Status LEDs
Point-to-Point I/O Mirroring Configuration:

The digital inputs from one module are replicated on the other module (and vice versa).

Standard SignalFire Configuration:

Operates as a remote node with a standard SignalFire Gateway. All I/O data is available at the Gateway as Modbus registers. Supports Modbus writes to control the relay outputs. SignalFire node in a SignalFire network, providing longer-range as well as more sophisticated monitoring and control.



The MINI edition of the SignalFire Wireless I/O System is a cost-effective module that reads, controls and transmits analog  inputs, digital inputs and has programmable discrete outputs. There are two modes of operation, the first utilizes two modules and acts as a wire replacement that replicates digital signals over a wireless link between the pair of MINI Wireless I/O Modules. The second mode of operation is as a standard node that sends the I/O data (via the SignalFire wireless mesh network) to a SignalFire Gateway where the data is available via a Modbus-RTU or Modbus-TCP interface. The modules are DIN rail mounted and designed to be easy to use.

  • Inputs / outputs module with built-in 900mhz radio
  • Wire replacement for analog and discrete signals
  • Perfect for control & shutdown applications
  • 3-Mile range with built-in wireless mesh

Operating Temp:  -40ºC to 65ºC | -40ºF to 149ºF

Power:  6-36 VDC (25mA average @12V no relays energized, additional 15mA max for each energized relay)

Inputs / Outputs:  DI: Dry contact or 30VDC max (push-pull) | 1 AI: 0-5VDC | 2DO: 2A@30VDC, 0.5A@125VAC

Radio Frequency:  902-928 MHz ISM band, FHSS radio

Antenna Connection:  RP-SMA

Enclosure:  ABS plastic, DIN mount

Wired Termination:  18 AWG

Approvals:  Class 1 Division 2 Certified, Groups A, B,C, D. Temperature Code T5.  Certified to CSA C22.2 No. 213, Conforms to UL 121201:2017 | ISM Band: FCC & Industry Canada

Radio Power:  500 mW

Range:  Up to 3 miles line of sight (depending on antenna)

Weight:  0.22 kg, 0.5 lb


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