... valves system. Main Function1. Working model selection: Cool, Heat, Ventilation2. Fan speed selection: High, Medium, Low, Auto3. Working status memorizes when ... , or 1 line x 2.5mm2Shellfire-proof ABSDimension86x86x12 mmInstallation60mm standardProtectionIP30Picture Fan Coil Controller & HVAC thermostat (ZL-HV81)