SOUND LEVEL METER FEATURES * Large LCD display, easy to read. Electrical specification for * Frequency and Time weighting meet IEC 61672 class 2. Type K/ J thermometer * A, C frequency weighting networks is selected. Sensor Reso- Range Accuracy * Time weighting ( Fast & Slow) dynamic characteristic Type lution modes. Type K 0.1  -50.0 to 1300.0  ± ( 0.4 % + 0.8  )  * 0.5 " standard microphone head. -50.1 to -199.9  ± ( 0.4 % + 1  )  * AC output for system expansion. 0.1 -58.0 to 2372.0 ± ( 0.4 % + 1.5 )  * RS232/ USB computer interface. -58.1 to -327.8 ± ( 0.4 % + 1.8 )  * Auto range & Manual range selection. Type J 0.1  -50.0 to 1100.0  ± ( 0.4 % + 0.8  )  * Available for external calibration adjustment. -50.1 to -199.9  ± ( 0.4 % + 1  )  * Condenser microphone for high accuracy & long-term 0.1 -58.0 to 2012.0 ± ( 0.4 % + 1.5 )  stability. -58.1 to -327.8 ± ( 0.4 % + 1.8 )  * Memory function to store the Max. & Min. value. * Accuracy value is specified for the meter only. * Hold and Peak Hold functions. * Temp. probe ( Type K, TP-01 TP-02A, TP-03. TP-04 ) is the * Build in type K and type J thermometer. optional accessories. * Optional probe ( EM-900P ) for Humidity/ Temp.,  Light and Anemometer measurement. GENERAL SPECIFICATION * DC 1.5 V battery ( UM-4, AAA ) X 6 or DC 9V adapter in. Display 51 mm x 37 mm LCD ( Liquid crystal * Operation key used push button. display) , 5 digits with annunciator. * LCD display for low power consumption & clear read-out Operating Temp. 0 to 50  ( 32 to 122 ) . even in bright ambient light condition. Operating Humidity Less than 80% RH. * Using the durable, long-lasting components, including a Power Supply DC 1.5 V battery ( UM4, AAA ) x 6 PCs,  strong, light weight ABS-plastic housing case. or equivalent. * Small and light weight design allow one hand operation. Power Approx. DC 19 mA. * Patent. Consumption