Model No.: : ST-107 Product Description - Fast, Slow, Impulse response time. - Frequency range: 31.5Hz ~8KHz. - Measurement range: 30dB~130dB. - Dynamic range:100dB. - A/C/Z frequency. - Storage up to 32,000 records. - USB interface. - AC and D ...

Model No.: : ST-107S Product Description - Comply with IEC-61672-1 2002 Class 2 - Fast, Slow, Impulse response time. - Frequency range: 31.5Hz ~8KHz. - Measurement range: 30dB~130dB. - Dynamic range:100dB. - A/C/Z frequency - Storage up to 32,00 ...

Model No.: : ST-120 Product Description IEC 60942:2003 Class1/ANSI S1.40-1984. ● Output sound level : at 94dB and 114dB. ● Frequency : 1KHZ ±1% (Class1)-(A,C,Z); 250HZ ±1% (Z) ● Accuracy : 94±0.3dB 114±0.5dBSpecifications ● Sound pressure levels ...

Model No.: : TM-100 Product Description Setting standard sound level at 94dB and 114dB. According Standard ANSI S1 4-1984 and IEC 942 1988 Class 2 1/2 inch microphone adapters provided. Low battery indicator.

Model No.: : TM-101 Product Description IEC 61672, Type II 30~130dB. LO, MED, HI ranges. AC/DC signal output.

Model No.: : TM-102 Product Description - IEC 61672, Type II - 30~130dB. - Auto Ranging. - LO, MED, HI ranges.

Model No.: : TM-103 Product Description - IEC 61672, Type II - USB Datalogger with 14,000 records. - Auto Ranging. - 30~130dB. - LO, MED, HI ranges.

Model No.: : YF-20 Product Description - Analog Display - Ranges: Lo: 40 - 80 dB Hi: 80 -120 dB - Unique selecting switch for easy operation by one-hand.