The Dwyer THC Temperature/Humidity Switch simultaneously measures and controls temperature and humidity. It features a 3-digit red display for temperature and a 3-digit green display for humidity. Four independent SPST relays (two for temperature, two for humidity) provide control outputs. The unit accepts up to two temperature probe inputs (thermistor, sold separately) and a humidity sensor with 0–1 V, 3 V, or 4–20 mA output.

Key features: 61 programmable parameters, password protection, selectable fail-safe status of relay outputs, wide temperature range (-58 to 302°F) and humidity range (10–100% RH). Ideal for HVAC, industrial process, and environmental control applications requiring integrated temperature and humidity switching.