Lennox 76M31 Return Air Duct Relative Humidity Sensor (BRAND NEW)

ACI A/RH2-D Relative Humidity Duct & Outside Series Sensor, +-2%

General Eastern RH-3-I-O/A Relative Humidity Sensor

NEW ACI HH/RH5-D | DUCT EH 5% RELATIVE HUMIDITY SENSOR FOR HVAC/BAS APPLICATIONS

Belimo 22DTH-53MB Duct Sensor Humidity Temperature 5.5", 24VAC/DC 4-20mA NEMA 4X

Honeywell Relative Humidity Sensor 2E574

Veris HD5XMSX Relative Humidity Duct Sensor, 5%, 4-20 mA, RH

Distech TS-D2X004 Dual Purpose Temp Sensor, 100mm/4", Nema 4X, (Duct/Immersion)