Key facts
- Brand
- EXTECH
- Model
- HW30
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-01
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Extech HW30 Heat Watch User Manual
The Extech HW30 is a multi-function watch designed to monitor environmental conditions and time. It features a Heat Index mode that calculates temperature based on ambient readings and relative humidity, alongside standard chronograph capabilities including lap/split timing and countdown timers.
The device includes several operational modes such as Time/Date, Alarm, and Stopwatch with memory for up to 99 laps or splits. Users can set alarms for specific heat index levels and customize units of measure between Fahrenheit and Celsius.
EXTECH HW30 specifications
| Accuracy (Watch) | +5 seconds/24 hours |
|---|---|
| Accuracy (RH) | +5% (33 to 75% RH), +7 %(1 to 32% and 76 to 99%) |
| Accuracy (Temp) | +3°F (1.5°C) |
| Temperature Range | 14 to 122°F (-10 to 50°C) |
| Heat Index Range | 70 to 122°F (22 to 50°C) |
| Humidity Range | 1 to 99%RH |
| Memory Capacity | 30 Laps/ 30 Splits |
| LAP Counter Max | 99 Laps |
| Battery Type | CR2032 |
| Dimensions | 3.1x2.6x0.8" (79x66x23mm) |
| Weight | 3 oz. (85g) with battery |
All EXTECH HW30 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the accuracy of the temperature measurement?
The temperature accuracy is +3°F or 1.5°C.
How many laps can be stored in memory?
The device can store up to 99 laps and 30 split times.
What is the timing capacity of the HW30?
The device has a timing capacity of 9 hours, 59 minutes, and 59 seconds.
From: Extech HW30 HeatWatch Humidity/Temperature Stopwatch Product Datasheet
What is the accuracy of the stopwatch?
The accuracy is rated at ±5 seconds per day.
From: Extech HW30 HeatWatch Humidity/Temperature Stopwatch Product Datasheet