Ambient Weather WM-4 Handheld Weather Station w/Windspeed, Direction, Temperature, Humidity, Compass, Dew Point, Comfort Index, Psychrometer

Ambient Weather WM-4 Handheld Weather Station w/Windspeed, Direction, Temperature, Humidity, Compass, Dew Point, Comfort Index, Psychrometer

• The Ambient Weather WM-4 is a comprehensive handheld weather station, directional compass, heat index monitor and psychrometer, all in one compact, portable, rugged package.
• The WM-4 measures wind speed, wind direction, temperature, relative humidity and compass direction, and calculates wind gust, dew point, wet bulb and dry bulb temperature, Delta T, wind chill and heat index.
• The jack knife case design protects the unit, and allows you to hold the case while taking precise temperature meaurements, avoiding false readings from your hand temperature.

<b>Features:</b><br> Current wind speed, Maximum wind speed, Average wind speed<br> Wind measurement units: knots, mph, kph, feet/minute, meters/second, Beaufort<br> Wind direction in degrees and compass points<br> Calculates cross wind, head/tail wind<br> Current temperature (°F or °C)<br> Current dew point (°F or °C)<br> Current wet bulb (°F or °C)<br> Current wind chill (°F or °C)<br> Current relative humidity (%RH)<br> Current Delta T <br> AccuWeather.com patented Comfort Index<br> USA fluxgate compass<br> Swiss-made impeller<br> Lifetime calibrated Swiss-made humidity sensor<br> Backlit LCD display<br> Auto shutoff after 5-min<br> Threaded for tripod mounting<br> Pocket-knife design to protect unit when not in use<br> Adjustable lanyard<br> Water resistant and floats<br> <b>Specifications:</b><br> Wind speed range: .8-89 mph<br> Wind speed accuracy: ±3% when aligned with winds axis<br> Current wind response time: 1-sec<br> Avg wind response time: over 10 sec<br> Max wind response time: 1-sec<br> Cross wind head/tail wind response time: 5 sec<br> Wind direction response time: 1 sec<br> Temperature range: -20° to +158°F<br> Temperature accuracy: ±1.8°F<br> Temperature response time: 1 min<br> Dew point range: -20° to +158°F<br> Dew point accuracy: ±3.6°F<br> Dew point response time: 1 min<br> Wet bulb accuracy: ±3.6°F<br> Wet bulb range: 32° to 100°F<br> Wet bulb response time: 1-min<br> Wind chill range: -50° to +50°F<br> Wind chill accuracy: ±1.8°F<br> Wind chill response time: 1 sec<br> Rel. humidity range: 5-95%<br> Rel. humidity accuracy: ±3%<br> Rel. humidity response time: 1 min<br> Delta T response time: 1-min<br> Compass accuracy: ±2°<br> Compass range: 0 to 360<br> Compass response time: 1 sec<br> <b>Other Specifications:</b><br> Power: CR2032 Lithium battery (included and replaceable)<br> Dimensions: 5.5" x 1.75" x .75"