GX70SM wireless input unit for SMART 920

The wireless GX70SM remote data logger allows for quick and convenient data collection in areas that are not easily accessible or expensive to wire to.

The GX70SM wireless input unit is a compact, battery-powered analog input module that uses 920 MHz radio link to connect to a SMARTDAC+ GX20, GP20, or GM10. The GX70SM allows for the collection of a variety of data points from locations that cannot be easily reached or are difficult and expensive to access. The optional humidity sensor and its simple mounting options makes this ideal for monitoring environmental conditions in areas like warehouses, clean rooms, and inside working environments where heat-related workplace injuries are a concern.

Note: The use of SMART 920 enabled units is limited to the United States, Korea and Japan. Please refer to the instructions for proper installation and use.

battery powered remote data loggerBattery Powered

A pair of standard CR123 batteries will power the GX70SM module for 5 years when configured for a measurement once every 5 minutes. The module can also be powered from the USB port for long term or high speed data collection.

Multiple Inputs

The wireless module has 2 standard universal inputs and 1 dedicated input for relative humidity measurement.

The universal input channels support thermocouples, RTDs, DC voltages, current (with an externally mounted resistor) and digital inputs.

Input Calibration

The module inputs can be calibrated by the customer when routine calibration is required for compliance.

secure dataSecure Data

Wireless Terminal Authentication blocks unauthorized access. It also provides industrial grade AES-128 signal encryption to prevent tampering and wiretapping.

Can be installed in a variety of locations

  • Can be hung on a wall screw.
  • Can be directly mounted to a wall or their flat surface.
  • Can be placed on any ferrous item with the strong embedded magnet.
  • Can be placed on any flat surface.

Can be installed in a variety of locations


Extensive self-diagnosis

  • The status of the module can be displayed on the master unit. Conditions such as low battery and sensor burn out can be detected.
  • The signal strength of the module can easily be detected by the base unit to assist in module placement.   

Data Backup

  • Save up to 4,500 data points.
  • In the unlikely event of a dropped wireless connection, the missing data that is stored in the GX70SM can be recombined with the data collected by the master unit. 

Data Backup

See data in areas without power (when using GX70SM)

Temperature and humidity management of a clean room

The wireless input unit GX70SM has built-in humidity sensor. It can be used in areas with severe restrictions such as clean rooms. Also, the inputs can be calibrated by the customer.

temperature and humidity management

Improved working conditions in a factory

Due to its excellent responsiveness to aggressive temperature changes, temperature and humidity can be controlled from inside the factory. This allows for easier management of environmental and safety conditions, preventing incidents such as heat stroke of personnel.

improved factory working conditions


FDA 21 CFR Part 11 Compliant

SMART 920 supports electronic records and electronic signatures under FDA 21 CFR Part 11 for food, pharmaceutical, and other FDA regulated applications.


Flexible wireless communication

  • Communication between the main unit and a SMART 920 remote unit can be established up to approximately 1 km in line of sight.
  • The intelligent mesh network automatically recognizes unstable wireless links and re-routes data to a clear channel.

Reduced installation costs

Mounting conduit and pulling wire is no longer necessary. Installing a wireless solution greatly reduces installation time and costs.

Flexible wireless communication

Multiple mounting options

Wireless I/O components have multiple mounting options to match the conditions at the field location. Components can be DIN rail mounted, wall mounted, set on wall screws, set on a desktop, or attached to a ferrous surface with a magnet. These options provide for system flexibility allow changes to be quickly implemented.

Long distance data acquisition is possible

A 920 MHz wireless signal has a longer range than one in the 2.4 GHz band, typically used in wireless LAN applications. It has a greater reach around obstacles making it favorable for long distance or highly obstructed environments. Up to 0.5 mile line of sight.


You now can see everything critical to your process: log key data points, monitor current process status, unreachable remote point, and more.

Application examples

  • Warehouse monitoring for temperature, humidity and door status.
  • HSE monitoring for indoor workers at risk for heat-related illnesses.
  • Remote monitoring of facility process operating status.
  • Energy monitoring.

Product Overviews


    Smart user interface, smart architecture, and smart functionality is achieved in the new Yokogawa SMARTDAC+ data acquisition and control product series. The Yokogawa SMARTDAC+ GX and GP are fully integrated measurement, display, and recording platforms equipped with an advanced touch screen operator interface. GX series is a panel-mount design, capable of operating in harsh industrial applications and environments. GP is the portable version of the GX, intended for use in lab and test bench applications.

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