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Choose an indicator for %RH measurement only, %RH and °>F measurements, or %RH, °>F and °>C measurements. All models have a cellulose RH sensor that measures relative humidity from 0 to 100% RH. Thermohygrometers feature a bimetallic temperature sensor.
Models 03310-20 and 03310-40 include a test certificate ensuring conformance to stated specifications. All indicators have a solid brass case, a 5" diameter glass face, and predrilled holes for wall mounting.
Our specialists are here to help you find the best product or part available for your application. Call or Email us and we will make sure you get the right product or part for the job.