Wireless Presenter/ Presentation Laser Pointer for PPT Presentation

AS804 Digital Sound Level Meter Sri Lanka 30-130db Decibel Meter Noise Monitoring Tester Smart Sensor Noise DB Detector Analyzer Description: Digital Sound Level Meter Sri Lanka measures the sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft noise, safety Engineers,Health,Industrial Safety offices and Sound Quality control in various environment. Features: ★100% brand new and high quality. ★Digital sound level meter with stable and reliable performance. ★Wide measurement range from 30dB to 130dBA. ★Data hold function, maximum and minimum value measurement. ★LCD display with backlight, convenient to use at night. ★Low battery indication, automatic & manual power off function. ★Compact and light, convenient to hold and carry. ★Equipped with sponge ball for sensor protection.