Hello @RealSkier ，

Welcome to our community.

Regarding the heat concern:
It's actually normal for TP-Link range extenders to generate heat during operation, as is typical for electronic devices. Based on TP-Link laboratory testing, our extenders can operate continuously or safety hazards at room temperatures (not device temperature) up to 40°C (104°F). The device surface may feel warmer than its surroundings, which is normal behavior.

Here are some tips to ensure proper ventilation and prevent overheating:
1. Do not place the extender on paper, cloth, fabrics, non-heat-resistant plastics, or any surface that does not allow for proper heat dissipation beneath the device.
2. Do not cover the extender with any objects, and avoid placing it in enclosed spaces. Place it in an open area.
3. Keep the extender away from direct heat sources (such as fireplaces or space heaters) and excessive sunlight.

Regarding your sprinkler timer and doorbell not connecting:

Since your RE600X was working fine before and these devices were previously connected, let's try these troubleshooting steps:
1. Try restarting both your router and the extender.
2. Ensure your router's Wi-Fi network is working properly by connecting other devices directly to it.
3. Verify that your extender is within range of the router and positioned optimally for signal strength.
4. Keep the extender away from interfering devices like metal objects, fish tanks, microwaves, and Bluetooth devices.
5. Make sure the extender's Wi-Fi name differs from your router's Wi-Fi name to help identify which network your devices are connecting to.
6. Try forgetting and re-adding the Wi-Fi network on your sprinkler timer and doorbell cam.

In addition, you mentioned 'plug an extension cord into the other outlet when I noticed the warmth.' Does this mean that after configuring the RE600X, it needs to be fixed in one position?

Would directly connecting it to the outlet or switching to a different outlet improve the situation?