Hyleton 315 Plug
Similar to the Hyleton 317, this uses the Tuya TYWE3S module in place of the ESP8266, but using something such as tuya-convert can very easily convert the unit to Tasmota firmware. Blue LED on GPIO4, red LED on GPIO5, relay on GPIO12, button on GPIO13. Flash mode appears to be
1M QIO on these units, but double-check during the tuya-convert process.