Skip Content

Contact Transmitter,WiFi close
close x

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.
How can we improve our Product Images?

Contact Transmitter, WiFi

Price $401.75 / each

Please sign in or register to access lists

Confirm ZIP Code to determine availability.


Invalid Zip Code


Ship to: (Change)


Invalid Zip Code

  • Item # 21YU90
  • Mfr. Model # 11109
  • UNSPSC # 43223206
  • Catalog Page # 857
  • Shipping Weight 0.31 lbs.
Country of Origin USACountry of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Technical Specs

  • ItemContact Transmitter
  • Communication MethodWiFi 802.11 B/G/N
  • Power SourceAA Lithium Battery
  • Battery Life3 yr.
  • FeaturesEnterprise Security PEAPv0 with EAP-MSCHAPv2 (PEAP)
  • Height4.25"
  • Width2.5"
  • Depth1.125"
  • Wireless Range2 Mile
  • For Use WithTempTrak Wireless Monitoring System
  • IncludesBatteries
  • Manufacturers Warranty Length1 yr.
How can we improve our Technical Specifications?

Compliance and Restrictions

  • This item is manufactured or supplied by a minority, woman or disadvantaged business.


The TempTrakā„¢ system wirelessly transmits real-time data to an on-site or remote computer and provides instantaneous alerts and reports for trend analysis, historical data files, and documentation of corrective actions. Customizable and scalable, TempTrak can fit any size facility, including those with various departments like hospitals, universities, casinos, stadiums, and manufacturers. Designed to work independently or with a Building Automation System via BacNet Protocol. The TempTrak Wi-Fi transmitter is a high-speed wireless module with PEAPv0 enterprise security capable of collecting, storing, and transmitting data.

Note: Prior to purchasing a system, call 1-800-GRAINGER or your local branch for assistance with hardware and software product selections including hosting and BacNet options. Installation, training, and software support services are required and quoted on a per system basis.

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.