---
product_id: 448689010
title: "BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester"
brand: "btmeter"
price: "R1195"
currency: ZAR
in_stock: true
reviews_count: 7
category: "Btmeter"
url: https://www.desertcart.co.za/products/448689010-btmeter-bt-881w-heat-stress-meter-anemometer-digital-indoor-outdoor
store_origin: ZA
region: South Africa
---

# 0.1%RH humidity resolution ±0.6℃ temperature accuracy 0~30m/s wind speed range BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester

**Brand:** btmeter
**Price:** R1195
**Availability:** ✅ In Stock

## Summary

> 🌟 Master the elements with precision—your ultimate heat & wind stress sidekick!

## Quick Answers

- **What is this?** BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester by btmeter
- **How much does it cost?** R1195 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/448689010-btmeter-bt-881w-heat-stress-meter-anemometer-digital-indoor-outdoor)

## Best For

- btmeter enthusiasts

## Why This Product

- Trusted btmeter brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Action:** Backlit LCD, data hold, auto power-off, and factory calibration ensure effortless, reliable performance anytime, anywhere.
- • **Versatile & Portable:** Compact design with 5 air velocity units and dual temperature scales, perfect for indoor/outdoor HVAC, sports, and industrial use.
- • **Precision You Can Trust:** High-accuracy sensors deliver ±5% wind speed and ±0.6℃ temperature readings for professional-grade monitoring.
- • **Smart Heat Stress Alerts:** Real-time WBGT alarms warn you when black globe temperature hits critical 20~50℃ range—stay safe, stay ahead.
- • **All-in-One Climate Command:** Seamlessly switch between wind speed, temperature, humidity, and WBGT modes with one button.

## Overview

The BTMETER BT-881W is a multifunctional digital heat stress meter and anemometer designed for indoor and outdoor use. It accurately measures wind speed (0~30m/s), ambient temperature (±0.6℃ accuracy), humidity (0.1%RH resolution), and Wet Bulb Globe Temperature (WBGT) with real-time alerts. Its portable, user-friendly design supports multiple units and modes, making it ideal for HVAC maintenance, outdoor sports, industrial safety, and environmental monitoring.

## Description

Buy BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester: Wind Speed Gauges - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Pretty nice for being cheap - For being cheap it is very accurate on average it’s off maybe 1mph vs my kestrel and I gave 10xs the cost for my kestrel
Review: Not very accurate - Nice compact meter, but it is not very accurate compared to an actual WBGT meter

## Features

- 💖【Multifunctional】Not Just a digital anemometer, but also a handheld heat stress meter to check black ball temperature, ambient temperature and humidity. One-button to switch it into an anemometro or heat stess monitor mode.BT-881W could measure windspeed 0~30m/s, test wind temperature 0~50℃，monitor relative humidity 0.1%~99.9%RH, check WBGT temperature 32~122°F(Celsius Fahrenheit Switchable)
- 💖【High Accuracy】With built-in upgraded wind monitor and temp sensor, this portable WBGT heat stress monitor could test air flow with high accuracy of ±5%, 0.1%RH resolution for humidity, ±0.6℃ accuracy and 0.1℃/℉ resolution for temperature.Supports MAX/MIN wind speed measurement modes, smart anemometro for HVAC maintenance, drone driving and dust collection system etc.
- 💖【Portable WBGT monitor】Not only test Wet Bulb Globe Temperature (WBGT),but also alert you with WBGT alarms when black globe temperature (TG) level reaches 20~50℃. Supports Indoor/ Outdoor WBGT measurement modes, to avoid temperature, humidity and direct or radiant sunlight difference and get more accurate heat stress index. Available in boiler room, mining area, military training and marathon outdoor activities etc.
- 💖【Easy to Use】Supports 5 air velocity units(m/s, Ft/min, Knots, Km/h, Mph) and 2 temperature units(Celsius Fahrenheit degree)option. Data hold button to lock and freeze measurement data. Backlit LCD display and auto power off thoughtful features to help you get use of this wind speed gauge WBGT tester easily.
- 💖【Calibrated Anemometre】All BTMETER electrical products have been strictly calibrated before shipment. Quality wbgt thermometer wind meter BT-881W comes with 365 days warranty quality and lifetime technical supports. Just feel relax to place order and get it for your outdoor hiking camping or household AC system air vent balance :)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WMQTFKD |
| Additional Features | Portable |
| Are batteries included? | No |
| Best Sellers Rank | #102,572 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #28 in Wind Speed Gauges |
| Brand | BTMETER |
| Brand Name | BTMETER |
| Color | Orange |
| Customer Reviews | 4.2 out of 5 stars 39 Reviews |
| Display Type | LCD |
| Included Components | 1* 881W Heat Stress Meter and 1* User manual |
| Item Height | 20.8 centimeters |
| Item Weight | 4.96 ounces |
| Manufacturer | BTMETER |
| Material | Plastic |
| Material Type | Plastic |
| Number of Batteries | 1 9V batteries required. |
| Power Source | Battery Powered |
| Recommended Uses For Product | Home |
| Sensor Technology | Ultrasonic |
| Shape | Rectangular |
| Special Feature | Portable |
| Specific Uses For Product | Heat Index |
| Style Name | Modern |
| Temperature Accuracy | ±2℃ |
| Upper Temperature Range | 50 Degrees Celsius |

## Product Details

- **Brand:** BTMETER
- **Recommended Uses For Product:** Home
- **Specific Uses For Product:** Heat Index
- **Power Source:** Battery Powered
- **Special Feature:** Portable
- **Material:** Plastic
- **Number of Batteries:** 1 9V batteries required.
- **Style:** Modern
- **Color:** Orange
- **Included Components:** 1* 881W Heat Stress Meter and 1* User manual

## Images

![BTMETER BT-881W Heat Stress Meter Anemometer, Digital Indoor/Outdoor WBGT (Wet Bulb Globe Temperature) Meter with Wind Speed, Ambient Temp, Humidity Tester - Image 1](https://m.media-amazon.com/images/I/61nAKAzHpXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pretty nice for being cheap
*by F***D on October 20, 2025*

For being cheap it is very accurate on average it’s off maybe 1mph vs my kestrel and I gave 10xs the cost for my kestrel

### ⭐⭐⭐⭐ Not very accurate
*by T***S on July 16, 2024*

Nice compact meter, but it is not very accurate compared to an actual WBGT meter

### ⭐⭐⭐⭐⭐ Works. Give it time to equilibrate.
*by W***R on December 14, 2024*

It works. It takes several minutes for the black sphere to heat up in sunlight. Patience, Grasshoppah. Default alarm ranges aren't the same as milspec numbers. Tweak settings to suit your preferred standard.

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-25*