Model Number: EVC20 Brand Name: DOTECH INC. Key Specifications/Special Features: 1. Main features:- New generation of electronic expansion valve controller- High performance and stability- Precise PID and superheat control- Intelligent temperature and pressure control (hot gas bypass and liquid injection)- Compatible with various refrigerants- RS485 communication- Manual valve open ratio configuration- Smart-rail mount2. Models:

EVC20-00: basic model
EVC20-R4: RS485 Comm(ModbusRTU/ASCII)