Applied to detect, adjust, control air velocity in ventilation measurement and control system to satisfy the ... optional, optional relay output for alarm or controlField jumpers selection air velocity range 0~5/10/15/20m/sMMI operation panel ... ~100°CAccuracy<±0.5°C@25°C(≥1m/s slow air )Response time10sOutput4~20mA,0~10VDC,RS485/ModbusGeneral Relay output1×SPDT ...