This sound level meter complies with IEC651 Type 2 and ANSI S1.4 Type 2. <br />With the measuring scope from 30 to 130 dB and automatic shifting function. <br />Digital display, good anti-interference performance, power saving. <br />With the backlight feature, it is appropriate for gathering the sound data at night. <br />Composite material injection molding process is adopted for casing with anti-drop structure design. It is not only extremely wear-resisting, but also elegant. <br /><br /><br /><br />Sound pressure accuracy: ± 1.5 dB (sound pressure standard, 94 dB @ 1KHz). <br />Sound pressure accuracy: ±5 dB (sound pressure standard, 94 dB @ 8KHz).<br />Sound pressure frequency response: 30Hz - 8KHz. <br />Dynamic range of sound pressure: 50 dB (for each measurement gear level). <br />Sound pressure measurement scope: 30-130 dB A, 35-130 dB C. <br />Sound pressure frequency weighting characteristics: A and C characteristics. <br />Dynamic characteristic of sound pressure: FAST 125ms, SLOW 1sec <br />Microphone: polarized capacitive microphone. <br />Digital display: 4-digit, resolution: 0.1 dB, sampling rate: 2 times/sec. <br />Analog bar display: Each analog bar represents 1 dB, sampling rate is 20 times/sec. <br />Measurement gear level: 30-80 dB, 40-90 dB, 50-100 dB, 60—110 dB, 70—120 dB, 80-130 dB, 6 gear levels in total. <br />Automatic shifting gear level: microcomputer will automatically select the best gear level in the range from 30 to 130 dB. <br />Below or above limit prompt: indicated with “UNDER” or “OVER” display. <br />Power Supply: 4x1.5V AAA Batteries<br />Product Size: 184mm×60mm×29mm(7.2”x2.4”x1.1”)<br />Product Weight: 190g(0.41lb)<br /><br />Sound level meter* 1<br />English manual * 1<br />Meter Bag * 1<br />Color box packaging!<br /><img src="http://img6.eachbuyer.com/x9/p100/cb779_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb779_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb779_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb779_7.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb779_8.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cb779_9.jpg" />