1High Accuracy: Digital decibel meter, noise measurement range 30 130dBA, accuracy: 5dB, resolution: 0.1dB. automatic switch off function is switched off, noise values can be measured continuously. 2Convenient to Use: The noise level meter is made of high quality soft rubber button material with a comfortable feel and non slip design on the side; HD LCD backlit display with clear numbers for easy use at night. 3Multifunction: Sound monitorr with backlit alarm, large LCD display, maximum or minimum noise monitoring, data hold function, automatic or manual switch off, sound level meter for continuous measurement of noise values, battery indication, etc. 4Practical Tool: This decibel meter is a great tool for checking, monitoring or controlling and test the sound level of any environments. It is widely applicable for families, business, studies, industrial and etc. 5Wide Application, Portable Design: Digital sound level meters are ideal for music recording, home theatre setups, neighbour noise complaints, work sites and noise pollution monitoring. Small and portable, easy for carrying.