Siemens QFM2101 Duct Relative Humidity Sensor,5%, 4-20mA

Siemens QFM2101 Duct Relative Humidity Sensor is a high performance device for measuring humidity in HVAC systems. Reliable transmission of humidity data to the control system is achieved using 4mA to 20 mA control signal for reliable transmission of humidity data to control system. The QFM2101 is furnished with screw terminals for clean wire connection in 18 AWG wire with operation on a 13.5 to 35 vdc voltage range. The sensor is constructed from durable poly material and is designed to withstand the conditions often found in duct environments.