ANALOG SOUND LEVEL METER, Model : YF-20
                                   Measurement Specifications for Model YF-20
Measurement Range Low (40dB ~ 80dB)
High (80dB ~ 120dB)
Accuracy ± 2dB @ 70dB
Display Compressed Dual Scale 2-Color Analog
Sensor 0.5” Electret Condenser Microphone
Frequency Weighting Curve A (Human Ear Response)
Time Weighting F (fast)
Calibration Built-in reference @ 70dB
Dimensions 6.29”(L) x 2.55”(W) x 1.5”(H)
Power 9Vdc Battery with Built-In Battery Check
Accessories Instruction Manual, Carrying Case & 9Vdc Battery
Weight 165 Grams with Battery