REED Instruments, R1620-KIT-NIST, Data Logging Smart Series Sound Level Meter with Sound Level Calibrator, Precision Calibration Screwdriver and Carrying Case NIST CertificateR1620-KIT-NIST Includes Only:NIST CertificateR1620 Sound Level Meter,R8090 Sound Level Calibrator,R1300 Calibration ScrewdriverCA-05A Medium SoftCarrying Case4 x AAA BatteriesProtective capFeatures:High accuracy of ±1.5dBA & C frequency weightingFast & Slow time weightingEasy to operate, designed for one hand operationIntegrated display provides flexibility for use without mobile deviceMagnetic backing allows instrument to be mounted to metallic surfacesData Hold functionLow battery indicator and auto shut offTripod mount for long-term monitoringWhen used with REED Smart Series App:Real-time data loggerUser selectable sampling rate from 1 to 120 secondsBluetooth® 5.0 provides connectivity to instruments up to 246' (75m) awayConnect, measure and datalog up to 6 instruments, simultaneouslyEasy setup with automatic app integration for compatible REED Smart Series instrumentsExport data via Excel or PDF and create custom reports that can be emailed from mobile deviceApplications:Preventative maintenanceRecording of acoustic levels for environmental impact studiesEnsuring safe working conditionsPublic venues/concertsIndustrial machinery/equipmentConstruction sitesCode enforcementTrafficLong-term measurementThis kit comes equipped with the tools you need to conveniently calibrate your sound level meter in the field. This kit includes a Data Logging Bluetooth Smart Series Sound Level Meter (R1620), Sound Level Calibrator (R8090), Precision Calibration Screwdriver (R1300), and Soft Carrying Case (CA-05A).REED Smart Series AppREED Smart Series instruments can be connected wirelessly to your smartphone or tablet. All measurement data is transmitted via Bluetooth to the free REED Smart Series app. The app allows users to analyze data, generate reports and send information by email directly from a mobile device.