Description :  MASTECH MS8229 5 in 1 Digital Temperature Humidity Lux Sound Meter Multimeter  Brand Name : Mastech Model Number : MS8229  5 in 1 Digital Multimeter with alarm : Sound Level Luminance Humidity Temperature Mulitmeter  Features :  Designed to international safety standard IEC61010-1 CAT II 1000V\/CAT III 600V Sound & light warning for the incorrect inserting the input plug Auto range\/Manual range Data hold， Auto power off， Back light Maximum value measurement  Specification :  Display : 3999 counts DC voltage : 400m\/4\/40\/400\/1000V±0.7% AC voltage : 400m\/4\/40\/400V±0.8%， 750V±1.0% DC current : 400μ\/4000μ\/40m\/400mA±1.2%， 10A±2.0% AC current : 400μ\/4000μ\/40m\/400mA ±1.5%， 10A ±3.0% Resistance : 400\/4k\/40k\/400k\/4M\/40MΩ±1.0% Capacitance : 50n\/500n\/5μ\/50μ\/200μF±3.0% Frequency : 10\/100\/1k\/10k\/100kHz±2.0%  Duty cycle : 0.1% - 99.9%±3.0% Temperature (thermocouple) : -20 C - 1000 C±3.0% or ±2 C， 0 F - 1800 F ±3.0% or ±4 F Temperature (NTC) : 0 C - 40 C±2 C;32 F -104 F±4 F HUMIDITY : 20% - 95%RH ±5.0%RH Light : 4000Lux\/40000Lux±5.0% Sound level : 40 - 100dB±5dB Continuity checking with buzzer Diode test Power : 1.5V (AAA) x 3 Size : 195 x 92 x 55mm  Package includes :  1 x MASTECH MS8229 Digital Multimeter 2 x Test leads 1 x K-Type thermo probe 1 x User Manual 3 x 1.5V (AAA) Battery  Details pictures :