{"NAME":"ESP32_Relay_AC_X1","GPIO":[1,1,1,1,1,1,1,1,1,1,1,1,224,1,1,1,0,1,1,544,0,1,1,1,0,0,0,0,1,1,1,1,1,0,0,1],"FLAG":0,"BASE":1}

This dev board can be powered only by AC 90V-250V. Do not flash while powered this way.

Flash with tasmota32-nspanel.bin, otherwise the relay on the board clicks on reboot because it’s using a pin reserved for PSRAM.

Flashing

WARNING: DO NOT IN ANY CIRCUMSTANCE OPERATE THE DEVICE WHILE CONNECTED TO AC POWER

Flash using any of the provided TX/RX headers and GND. Supply 5V power from a stable source. Use the IO button to enter flash mode.
I’ve flashed it by powering it via 3.3V pin using the “Golden CH340G” adapter.