KMC 70008 Switch
KMC 70008

Available from:

GPIO #Component
GPIO00 Button1
GPIO01 User
GPIO02 User
GPIO03 None
GPIO04 None
GPIO05 User
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 Led1i
GPIO14 Relay1
GPIO15 User
GPIO16 User
Configuration (old format, will be converted to new template when applied)
{"NAME":"KMC 70008","GPIO":[17,255,255,0,0,255,0,0,0,56,21,255,255],"FLAG":0,"BASE":18}

I didn’t see any place to add pin headers, but the module has the usual ESP-12 pin layout, so I soldered right to the pins. You can skip soldering to GPIO 0 and just hold the button down when booting the device to get into flash mode.

The button is on GPIO 0, the relay and the white LED are on GPIO 14, the blue LED is on GPIO 13. When the blue LED on GPIO 13 is set to LED1i the white light shines when the relay is off and the blue light illuminates then the relay is on.