High accuracy, fast response;Color LCD display with backlight Temperature measurement;MAX,MIN Data HOLD;Wide frequency range Fast/slow time weighting;Over range indication Enable/Disable auto power off Applied Standard:IEC61672-1 CLASS2 Measuring level range:35dB~135dB Dynamic range:50dB Frequency range:31.5Hz~8KHz Accuracy:2.0dB Frequency weighting:A frequency weighting Time weighting:FAST:125ms/ SLOW: 1s Microphone:1/2 inch electrets condenser microphone High/low reading indication: 100dB,LCD displays"Hi" High/low reading indication:Less than 100dB,LCD displays"LO" Temperature range:-20Celsius~70Celsius/-4Fahrenheit~158Fahrenheit Temperature accuracy:1.5Celsius/2.7Fahrenheit Resolution:0.1 Data update:300ms Battery life:at least 60 hours Enable/Disable Auto power off:The meter shuts off automatically after 15 minutes inactivity under auto power off mode, disable auto power off is available Battery:3*1.5V "AAA" batteries Operating conditions:-20 Celsius~60 Celsius/-4 Fahrenheit~140 Fahrenheit,10RH%~90 RH% Storage conditions:-20 Celsius~60 Celsius/-4 Fahrenheit~140 Fahrenheit,10 RH%~75 RH% Colour:Black + Green Material:plastic Package Contents: 1 * GN101 Noise Meter(With English manual) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.