The latest 8.3.1 lite version
Easy to upgrade to full version
OTA supported
Pre configed IOs plug and play
Pre flashed before assembling
Build in ESP8285 chip with 2M flash
 
Total local control with quick setup and updates. Control using MQTT, Web UI, HTTP or serial. Automate using timers, rules or scripts. Integration with home automation solutions. Incredibly expandable and flexible. Can be easily upgrade to ESPHome or Homekit etc. Contact us for upgrade firmware