The Setra SRH Wall Mount humidity transmitter is a thin, low-profile unit that measures relative humidity and temperature at the same time, in a housing built to sit flush against a wall rather than stick out into the room. It uses a durable capacitive sensor rated for 0-99% full-scale RH measurement, with a detachable probe that’s traceable back to NIST.
In actual application, this unit can be ordered with either an active (analog) temperature output or a passive RTD/thermistor output, so you get two measurements – humidity and temperature – from one device. The humidity accuracy comes in 2%, 3%, or 5% RH options depending on how tight you need the reading, with the active temperature output jumper-selectable across 40°C, 50°C, or 60°C span ranges.
From our experience, one of the more practical features here is the replaceable sensor probe. If the sensor drifts or gets contaminated after a while, you just swap the probe – no special training needed, and no field calibration required since each replacement probe is factory calibrated before it ships. This unit is commonly used across HVAC/R control, indoor air quality monitoring, laboratories, cultural relic protection, and clean electronics factories.
Before we quote this, we would normally check the accuracy class you need, whether you want active or passive temperature output, and the analog output type your BMS expects. Hope this helps.
