Digital UP/DOWN timer displays Temperature, Humidity, and Heat Index • User programmable Heat Index alarm • Stopwatch/chronograph mode with 1/100th second resolution • Fastest/Slowest/Average Lap recall • 99 lap counter with 30 lap/split memory • 10 hour countdown timer with audible beeper warning for the last 5 seconds • Programmable alarm • Calendar mode displays day, month, and date • 12 or 24 hour clock operation • Complete with 39 #34; (1m) lanyard and one 3V CR2032 battery SPECIFICATIONS HW30 ÿ Timing capacity 9hrs, 59mins, and 59secs Accuracy ±5 seconds/day Alarm Yes Countdown Timer Yes Lap Memory 30 laps Heat Index 70 to 122°F (22 to 50°C) Temperature 14 to 122°F (-10 to 50°C) Humidity 1 to 99% CE approved Yes Dimensions 3.1x2.6x0.8 #34; (79x66x21mm) Weight 3oz (85g) Warranty 1 year 140 ÿNIST traceable certificate with data is available when you order your meter with Certificate Traceable to NIST. Look for this symbolÿnext to product part numbers. ÿIndicates