I got those from someone and it does not come with any kind of datasheets

I’m guessing they are receiver and transmitter as they both have kind of an antenna.. anyone have an idea of the model so I could google the datasheets

Thanks!enter image description here

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  • \$\begingroup\$ I can't read the chips. Can you get a better picture? \$\endgroup\$ Mar 18, 2021 at 17:28
  • 1
    \$\begingroup\$ And please crop your photos for the benefit of readers using small screens. \$\endgroup\$ Mar 18, 2021 at 17:30
  • \$\begingroup\$ I got a clearer one, updated the question \$\endgroup\$
    – Dominique
    Mar 18, 2021 at 17:52
  • \$\begingroup\$ looks like an RF transmitter/receiver ... i don't see any IR emitters/detectors \$\endgroup\$
    – jsotola
    Mar 18, 2021 at 20:13

1 Answer 1


That's a "GWB T400 2.4GHz tranceiver kit" or similar.

Chipset is LT89xx.

  • \$\begingroup\$ Thanks a lot! Really appreciated \$\endgroup\$
    – Dominique
    Mar 19, 2021 at 7:18

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