♦ON/OFF button
♦Wind speed unit switch button
♦Wind speed unit select button
♦Data hold button
♦LCD back light button
♦Max/Min/Avg/Diff function button
♦Connection leadwire
Specification R816 R826 R836
Temperature Range 0℃~45℃   0℃~45℃
Air Veiocity Meauring Range 0.3~45m/s 0.3~45m/s 0.3~45m/s
Wind volume Range 0~999900m3/min 0~999900m3/min 0~999900m3/min
℃/ F Selection  
Accuracy of temperature ±2℃   ±2℃
Accuracy of Air Velocity ±5%±0.1dgt ±3%±0.1dgt ±3%±0.1dgt
Auto Power Off
Air Veiocity Unit M/s,Ft/min,Knots M/s,Ft/min,Knots M/s,Ft/min,Knots
km/hr,Mph km/hr,Mph km/hr,Mph
Back light
Max/Min Air Veiocity Measuring 
Average And Air Veiocity Measuring
Resolution 0.1m/s  0.1m/s  0.1m/s 0.2℃
Data Hold Function  
General Characteristics
Power CR2032 3.0V 9V Battery 9V Battery
Product Weight 52g 240g 240g
Product Size 105mmx40mmx15mm 170mmx160mmx49mm 170mmx160mmx49mm
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