echo -n "{\"psw\": \"YOUR_WIFI_PASSWORD\",\"ssid\": \"YOUR_WIFI_SSID\",\"t\": \"wlan\"}" | nc -cu 192.168.1.1 7000
https://github.com/stas-demydiuk/ewpe-smart-mqtt
https://github.com/tomikaa87/gree-remote
https://github.com/inwaar/gree-hvac-client