à¤Ã×èͧÇÑ´ÃдѺ¤ÇÒÁ´Ñ§àÊÕ§ Sound Meter à¤Ã×èͧÇÑ´àÊÕ§ ÃØè¹ 407732 Standard CE , IEC651 Type 2 , ANSI S1.4 Type 2 407732: Low/High Range Sound Level Meter ÂÕèËéÍ Extech, USA Dual-range Type 2 digital sound level meter with backlit LCD Features: * High accuracy meets ANSI and IEC 651 Type 2 standards * High and Low measuring ranges: 35 to 100dB (low) and 65 to 130dB (high) * Data Hold and Max Hold functions * Backlit LCD display to view in dimly lit area For complete specs please download the product datasheet (not available for some accessories) Specifications: * Display Counts 2000 count LCD * Range Low: 35 to 100dB High: 65 to 130dB * Basic Accuracy ±1.5dB * Weighting (A & C) * Response Time (Fast/Slow) * Dimensions 8.2x2.1x1.25"(210x55x32mm) * Weight 8.1oz (230g) Applications: - Enforcing community noise ordinances - Meeting government safety issues (OSHA) - Installing audio systems - Product noise certification and reduction