DescriptionMilesight WS302 is a LoRa sound level sensor with integrated microphone. WS302 can not only measure a wide range of noise levels and send various kinds of noise level values via LoRaWAN® network, but also supports multiple weighting measurements for different application scenarios. Compliant with Milesight LoRaWAN® gateway and Milesight IoT Cloud solution, users can manage all sensor data and trigger other sensors or appliances easily via webpage or mobile App remotely.WS302 can be widely used in smart buildings, smart cities, schools, heath monitoring, etc.Main FeaturesSupport multiple weighting measurements to suit different scenes: A weighting, C weighting, fast weightingSupport measuring various kinds of values to judge the sound level accurately: actual value, equivalent continuous value and max valueEquipped with an LED indicator to indicate threshold alarmsMore than 4 years battery lifeBuilt-in NFC for easy configurationCompliant with standard LoRaWAN® gateways and network serversQuick and easy management with Milesight IoT Cloud solutionFight Against Uncomfortable NoiseMonitor Sound Level with EaseWS302 is an advanced LoRaWAN® Sensor for monitoring noise/sound level in decibels (dB) with ease.30 to 120 dBA Measurement Range± 3 dB Accuracy; 0.1 dB ResolutionA-Weighting, C-Weighting & Fast-Time WeightingMeasurement Unit: SPL Actual, Leq, and Lmax A & C Weighting as NeededChoose A-weighting or C-weighting based on scenarios. Usually, A-weighting is appropriate for quiet environments while C-weighting is for noisy environments.Fast-Time WeightingFast-time weighting uses a time constant of 125 milliseconds for measuring unstable noise with large fluctuations.Fast weighting is turned off by default. When turned on, battery life will be shortened.More Sound Levels for more InsightSupport reporting of three sound level values (maximum sound level, sound pressure level, and equivalent continuous sound level) based on different weighting methods. Dainty as Always Blend into any Interiors, Fight Against Uncomfortable NoiseMinimalistic and modern design makes it ideal for classrooms, workplaces, hotels, hospitals, etc. WS302 is an unnoticed guard for eliminating noise pollution.LoRaWAN® BasedMilesight Sound Level Sensor is compatible with industry-standard LoRaWAN® gateways with a range of up to 15 km in rural areas and 2 km in urban areas.Long Battery Life Easy ConfigurationFlexible InstallationSpecificationsWireless TransmissionTechnologyLoRaWAN®FrequencyAS923-1&2&3&4Tx Power16 dBm (868 MHz)/22 dBm (915 MHz)/19 dBm (470 MHz)Sensitivity-137 dBm @300bpsModeOTAA/ABP Class AMeasurementRange30 dBA to 120 dBA, 35 dBC to 120 dBCAccuracy± 3 dB (0°C to 45°C)Resolution0.1 dBFrequency Range30 Hz to 8 kHzFrequency WeightingA and C Weighting (Software Switchable)Time WeightingFast WeightingMeasurement UnitSPL Actual, Leq, LmaxOthersConfigurationNFCButton1 × Power/Reset ButtonLED1 × Status/Alarm IndicatorPhysical CharacteristicsPower Supply2 × 2700 mAh ER14505 Li-SOCl2 Replaceable BatteriesOperating Temperature-20°C to 60°CRelative Humidity≤95% (Non-condensing)Ingress ProtectionIP30Dimension68 × 65 × 20.5 mm (2.68 × 2.56 × 0.81 in)Material & ColorPC ABS, WhiteInstallationOn the flat surfaces with screws or 3M tapes DocumentsMilesight WS302 LoRaWAN Sound Level Sensor – Complete User GuideMilesight WS302 LoRaWAN Sound Level Sensor – Datasheet
