SOUND LEVEL METER
Type: SL-300
Brand : Trotec ( Germany)

Specification :
a. Complies : DIN EN 61672-1 Class 1
b. Range : 30 to 80 dB, 50 to 100dB, 80 to 130 dB, 30 to 130dB ( Auto)
c. Accuracy : + / - 1, 4dB
d. Frequency : 31, 5Hz to 8 kHz
e. Dynamic range : 50dB
f. Weighting : A, C
g. Respon time : FAST ( 125ms) ; SLOW ( 1S)
h. Microphone : 1/ 2 inch
i. Display : 4 Digit
j. Fiture display : Max/ Min hold
k. Data hold : 50 data records
l. Time : Hours/ minutes/ second
m. power : 1x9V battery
n. Dimension : 210x55x32mm
o. Weight : 230g.