BTMETER BT-881W Heat Stress Meter & Anemometer | WBGT, Wind Speed, Temperature & Humidity

Overview

The BT-881W from BTMETER combines two trusted tools into one compact handheld device: an anemometer for wind speed and a heat stress monitor that reports WBGT, ambient temperature, and humidity. Its intuitive design makes it suitable for daily checks in industrial spaces, training fields, or home HVAC tasks, giving you a clear snapshot of environmental conditions without juggling multiple instruments.

Key measurements

Designed for versatile environments, the BT-881W covers a broad range of readings and unit options. It measures wind speed from 0 to 30 m/s, records ambient temperature from 0 to 50 °C (with Celsius/Fahrenheit switch), and tracks relative humidity from 0.1% to 99.9% RH. WBGT values are available in a 32–122 °F (0–50 °C) range, enabling quick comparisons between indoor and outdoor conditions.

• Wind speed units: m/s, ft/min, knots, km/h, mph
• Temperature: Celsius or Fahrenheit
• Humidity: 0.1%–99.9% RH resolution

Modes and practical uses

Switching between modes is simple: use it as a handheld anemometer or as a heat stress monitor. The WBGT feature helps you compare different environments while accounting for direct sunlight and radiant heat, making it helpful for outdoor events, training, and indoor safety checks.

• Outdoor training, field work, or marathon planning
• Indoor HVAC maintenance and vent balance checks

Smart features and reliability

The device includes a data hold function to lock readings, a backlit LCD for readability in dim spaces, and MAX/MIN wind speed capture for peak condition awareness. Alarms can alert you when WBGT values approach defined thresholds, helping you plan accordingly without guesswork.

All BT-881W units are factory calibrated and backed by a 365-day warranty with lifetime technical support, providing dependable performance for outdoor adventures, professional inspections, or everyday environmental monitoring.