à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì à¤Ã×èͧÇÑ´ÃдѺ¤ÇÒÁ´Ñ§àÊÕ§ Sound Meter > Professional Sound Level Meter à¤Ã×èͧÇÑ´àÊÕ§ SDL600: Sound Level Meter/Datalogger Records data on an SD card in Excel® format Features: High accuracy ±1.4dB meets ANSI and IEC 61672-1 Type 2 standards 30 to 130dB measurement range Auto or Manual ranging AC analog output for connection to an analyzer or recorder Large backlit LCD display Stores 99 readings manually and 20M readings via 2G SD card Datalogger date/time stamps and stores readings on an SD card in Excel® format for easy transfer to a PC User programmable sampling rate: 1 to 3600 seconds Min/Max, Data Hold, Auto Power Off Built-in PC interface Complete with 6 AA batteries, SD Card, wind screen, and hard carrying case For complete specs please download the product datasheet (not available for some accessories) Click to see explanation Click to see explanation à¤Ã×èͧÁ×ÍÇÔ·ÂÒÈÒʵÃì ÍØ»¡Ã³ìÇÔ·ÂÒÈÒʵÃì à¤Ã×èͧÇÑ´ÃдѺ¤ÇÒÁ´Ñ§àÊÕ§ Sound Meter > Professional Sound Level Meter à¤Ã×èͧÇÑ´àÊÕ§ SDL600