A compact sound-level meter that can be used either standalone or with the REED Smart Series App (available for download on Android and iOS) High accuracy of ±1.5dB Fast & Slow time weighting Easy to operate, designed for one-hand operation Integrated display provides flexibility for use without mobile device Magnetic backing allows instrument to be mounted to metallic surfaces Data Hold function Low battery indicator and auto shut-off Tripod mount for long-term monitoring When used with the Reed Smart Series App, it is a real-time data logger, provides a user-selectable sampling rate from 1 to 120 seconds, and allows you to connect, measure, and data log up to 6 instruments simultaneously When used with the Reed Smart Series App, Bluetooth 5.0 provides connectivity up to 246' (75 m) away Easy setup with automatic app integration for compatible REED Smart Series instruments App Supported Languages English, French Certifications CE, UKCA, FCC, IC ID Data Logging / Not Data Logging Data Logging Display Size 1.3" (34 mm) Frequency Range 31.5Hz to 8kHz Frequency Weighting A/C Includes (1) Sound Level Meter; (1) Windshield Ball; (4) AAA Batteries Manufacturer's Warranty 1 Year Measuring Range 30 - 130 dB Microphone 0.5" (12.7 mm) Electret Condenser Power Supply (4) AAA Batteries Time Weighing Fast/Slow (125mS and 1s)