This compact level meter by Reed Instruments can be used either stand-alone or with the Reed Smart Series app (available for download on Android and iOS). When connected to the app, the level meter can be set up to log measurements over a given period. Real-time data logging light meter measures sound levels with a high accuracy of 1. 5dB. Kit includes: light meter, four AAA batteries. Dimensions: 7. 1"H x 1. 5"W x 1"D. Weight: 3. 5 oz. Can be used either stand-alone or with the Reed Smart Series app (available for download on Android and iOS). Provides wireless Bluetooth 5. 0 connectivity with a range of up to 246'. Easy to operate, designed for one-hand operation. Integrated 1. 3" EBTN LCD display provides flexibility for use without a mobile device. Magnetic backing allows the instrument to be mounted to metallic surfaces. Tripod mount makes possible long-term monitoring. Features a low battery indicator and auto shutoff. Batteries provide a life of up to 50 hours. Measuring range: 30-130dB. Frequency range: 31. 5Hz to 8kHz. User-selectable sampling rate from 1 to 120 seconds. Provides AC frequency weighting, fast and slow time weighting. Connect, measure, and log data from up to six instruments simultaneously. Meets or exceeds the CE, UKCA, FCC, and IC ID standards. 1-year manufacturer limited warranty. Safety Data Sheet.