A handheld device to measure acoustic of sound level in an environment. Sound level meters are commonly used for noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmental and aircraft noises. It comes with an installed microphone which detects the sound level and a digital display screen to display the readings. What makes this product great is the value for money while providing a detection range from 30 decibels to 130 decibels with and incredible accuracy of ±1 decibel. This device has a resolution of 0.1 decibel and frequency range of 31.5 to 8kHz. The display is a 10mm LCD and gives you the low battery indication whenever the battery level is low. The product features Auto and manual shutdown, ‘A’, ‘C’ or ‘Flat’ weighing with slow / fast response, Alarm output: A LED optional relay output and backlight. The product comes with a hard carrying case and instruction manual which should be read carefully before use. Check the wind in the area before operating the device. Wind blowing across the microphone increases the noise measurement. Try and calibrate the instrument every time before use. Especially if the meter has not been used for long durations of time. Do not store or operate the instrument in areas of high temperature or humidity. Keep the instrument completely dry. Make sure to avoid severe vibration from any source. Remove the battery when you decide to put the instrument away for a long period of time. Auto Manual Shutdown. Low Battery indicator. DC Output : 0 ~ 1.3V 10mV/db. ‘A’, ‘C’ or ‘Flat’ Weighing with Slow / Fast response. 94db in full Callibration at (1KHz). Optional RS-232 Communication. Alarm Volume o/p : 30 ~ 130db. Alarm o/p : LED Optional Relay Output. Backlight.