• Max 500m Wireless Transceiver
• Wind Speed, Direction, Temperature, Air Pressure Sensors
• Data Recording in Excel format
• Selectable Intervals: 2s, 5s, 10s, 1min, 5 mins, 10 mins, 60 mins
• Hourly Report & History Wind Graph
• Real-Time Wind Alarm
• Marine Grade Protection - IP67 certified watertight construction provides full protection against water and dust.
• Robust Ball Bearings - Anti-corrosion stainless steel. Reliable for years of operation.
• Replaceable Wind Cups - Lightweight material ensures fast response. Captures winds from all directions.
• Enhanced Battery Life - Max 3 years of continuous operation
• Good for Research and Long-Term Analysis
• Data Recording Up to 1 Year 
• Wind Data with Historical Graphs
• Accurate Wind Speed, Temperature, Air Pressure Measurements
• 3-years Sensor Battery Life
• Low Power Consumption

ABOUT WIND SPEED &DIRECTION SENSOR

WL-21 measures both wind speed and direction. The sensor has a wind cup on top to measure wind speed and a metal wind direction sensor on the bottom. The sensor is water-proof and dust-tight. It sends real-time measured data to the receiver. All Scarlet’ wind sensor has undergone a strict quality control to ensure accurate measurement.

PRECISE WIND SPEED & DIRECTION SENSOR

Exceptional data accuracy. Ultra-long wireless range.
Trusted by The World’s Top Institutions

WIRELESS WIND DATA LOGGER

Record wind speed, direction, temperature, barometric pressure
Up to 1 year of long-term data recording (10s interval)
Data can easily export to Excel for wind site analysis
Selectable Intervals: 2s, 5s, 10s, 1min, 5 mins, 10 mins, 60 mins

INDUSTRIAL GRADE WEATHER STATION

Scarlet WL-21 system measures and displays current/average/maximum wind speed, wind direction, temperature, wind chill, Beaufort scale, atmospheric pressure, and historic data graphic in high accuracy with multiple measurement units. Users are able to set wind speed threshold and receive instant alarm notification when wind speed exceeds the set threshold.