The Extech HT200 Heat Stress WBGT Meter accurately determines heat stress levels by factoring humidity, temperature, air movement, and direct solar radiation. This combination of factors affects how the body cools itself, making the HT200 essential for preventing heat stroke during outdoor activities, construction, sporting events, and workplace monitoring.

The meter uses a capacitance sensor to measure WBGT (with or without sunlight), TG (globe temperature), TA (ambient temperature), relative humidity, dew point, and wet bulb temperature. It stores up to 50 readings and features Min/Max and Data Hold functions for convenient field use.

Measurement ranges include WBGT (no sun): 32 to 138°F, WBGT (with sun): 32 to 132°F, TG: 32 to 176°F, TA: 32 to 122°F, RH: 1 to 99%, dew point: -31.5 to 120.1°F, and wet bulb: -6.9 to 122°F. The HT200 is ideal for ensuring worker safety in hot, humid conditions.