The new version Micro JR bay case (13.5*6.5mm USB port housing compatible with most USB Type-C cables) and cooling fan are sold separately now and you can make your own TX module easily.

BETAFPV Micro RF TX module is based on the ExpressLRS project, an open-source RC link for RC applications. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. This makes ExpressLRS one of the fastest RC links available while still offering long-range performance.

A ton of ExpressLRS items are available now!

Bullet Points

• Made of high-quality plastic material. It is very durable and stable.
• Upgraded case designed. The USB port size is 6.5*13.5mm, which is compatible with 90% of the known USB Type-C cables.
• Two case colors options for ELRS Micro TX Module. You can make your own TX module easily.
• The cooling fan plays an important role in the ELRS Micro Module heat sink and performs very well in testing. Therefore, the module can work properly in daily use and need not worry about the temperature.
• Please note that the module case and cooling fan should be bought separately. Recommending buying together for your DIY module.

Specification

• Item: ELRS Micro TX Module Case/Cooling Fan
• Case Weight: 20g
• Cooling Fan Weight: 6g
• USB Port Size: 6.5*13.5mm
• Cooling Fan Size: 25.5*25.5*10.7mm
• USB Port: Type-C

Cooling Fan Performance

We have tested the temperature. With 500mW maximum RF output and 30 minutes powering on, the temperature of the RF chip can be kept under 50 degrees Celsius and about 30 degrees for the case. It proves that the module can perform properly in daily use and need not worry about the temperature. Also, for the black version (maximum 1W), the temperature can be kept under 65 degrees, with a heat sink in our testing. Results are also showing that the temperature of the RGB LED would be 10 degrees higher for both 500mW and 1W RF module. This is the reason why the cooling fan component is needed in this situation.

There are also questions raised should the fan be blowing air inward or outward. Our testing results show that the only temperature difference would be shown on the JR case, as the electronic components inside remain unaffected.

FAQ

Now the STL file for this 3D-printed case is released and free to download on our website for the ones who want to modify their case.

Link to STL file:
https://support.betafpv.com/hc/en-us/articles/4409821458841

Package

• 1 * Micro TX Module Case or Cooling Fan
• 1 * Pack of screws (Case only)