Sound Level Sensor Featuring LoRaWAN® WS302 User Guide
Safety Precautions Milesight will not shoulder responsibility for any loss or damage resulting from not following the instructions of this operating guide. The device must not be remodeled in any way. In order to protect the security of the device, please change the device password when first configuration. The default password is 123456. Do not place the device outdoors where the temperature is below/above operating range.
Revision History Date Doc Version Description June 9, 2022 V 1.
Contents 1. Product Introduction ......................................................................................................................... 5 1.1 Overview ...................................................................................................................................5 1.2 Features ................................................................................................................................... 5 2. Hardware Introduction .....................................
1. Product Introduction 1.1 Overview WS302 is a LoRaWAN® sound level sensor with an 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. WS302 can be widely used in smart buildings, smart cities, schools, health monitoring, etc. Sensor data are transmitted in real-time using the standard LoRaWAN® protocol.
2.2 Hardware Overview 2.3 LED Patterns Function Action LED Indicator Power ON/OFF Press and hold the power button for more than 3 seconds Power On: Off → On Reset to Factory Default Press and hold the power button for more than 10 seconds Quickly Blinks When the level does not exceed the threshold Green Blinks When the level exceeds the threshold for more than 1 minute Red Blinks Threshold Alarm Power Off: On → Off 2.4 Dimensions (mm) 3.
Note: The device can only be powered by ER14505 Li-SOCl2 batteries. 4. Operation Guide 4.1 NFC Configuration WS302 can be configured via an-NFC supported mobile phone. 1. Download and install “Milesight ToolBox” App from Google Play or Apple App Store. 2. Enable NFC on the smartphone and open Milesight ToolBox. 3. Attach the smartphone with NFC area to the device to read device information. 4. Basic information and settings of devices will be shown on ToolBox if it’s recognized successfully.
4.2 LoRaWAN Settings LoRaWAN settings are used for configuring the transmission parameters in LoRaWAN® network. Basic LoRaWAN Settings: Go to Device -> Setting -> LoRaWAN Settings of ToolBox App to configure join type, App EUI, App Key and other information. You can also keep all settings by default. Parameters Device EUI App EUI Application Port Join Type Description Unique ID of the device which can also be found on the label. Default App EUI is 24E124C0002A0001.
connectivity; If there is no response, the device will re-join the network. Reporting interval > 30 mins: the device will send a specific number of LinkCheckReq MAC packets to the network server every reporting interval to validate connectivity; If there is no response, the device will re-join the network. Set the number of packets sent When rejoin mode is enabled, set the number of LinkCheckReq packets sent. ADR Mode Allow network server to adjust datarate of the device.
Examples: 1, 40: Enabling Channel 1 and Channel 40 1-40: Enabling Channel 1 to Channel 40 1-40, 60: Enabling Channel 1 to Channel 40 and Channel 60 All: Enabling all channels Null: Indicates that all channels are disabled Note: For -868M model, default frequency is EU868; For -915M model, default frequency is AU915. 4.3 Basic Settings Go to Device Setting -> Basic -> Basic Settings of ToolBox App to change the reporting interval, etc.
Parameters Reporting Interval LED Indicator Description Reporting interval of noise level and battery level to the network server. Default: 10 mins, Range: 1 - 1080 mins Enable or disable the indicator threshold alarm feature in chapter 2.3. Choose A weighting or C weighting to detect environmental sound. Frequency Weighting A-weighting: suitable for normal environment like office, hospital, residential, etc.
4.5 Maintenance 4.5.1 Upgrade 1. Download firmware from Milesight website to your smartphone. 2. Open Toolbox App and click “Browse” to import firmware and upgrade the device. Note: 1) Operation on ToolBox is not supported during an upgrade. 2) Only Android version of ToolBox supports the upgrade feature. 4.5.2 Backup WS302 supports configuration backup for easy and quick device configuration in bulk. Backup is allowed only for devices with the same model and LoRa frequency band. 1.
Note: Slide the template item left to edit or delete the template. Click the template to edit the configurations. 4.5.3 Reset to Factory Default Please select one of the following methods to reset the device: Via Hardware: Hold on to the reset button inside the device for more than 10s. After the reset is complete, the indicator will blink in green twice, and the device will reboot. Via ToolBox App: Go to Device -> Reset to click “Reset”, then attach smartphone with NFC area to device to complete reset.
5. Installation Fixed by Screws: 1. Remove the rear cover of the device, screw the wall plugs into the wall, and fix the rear cover with screws on it, then install the back of the device. 2. Fix the bottom of the device to the rear cover with the theft-deterring screw. Fixed by 3M Tape: 1. Fix the bottom of the device to the rear cover with the theft-deterring screw.
2. Paste 3M double-sided tape to the back of the device, then tear the other side off and place it on a flat surface. Note: In order to ensure the best detection, please install the device as follows: The recommended installation height is 1.2 m to 1.5 m. The distance between the device and walls or reflectors should be at least 1 m, and the distance between the device and doors or windows should be about 1.5 m. Do not install the device close to the noise source.
Channel ff Type Description 01 (Protocol Version) 01 => V1 09 (Hardware Version) 01 40 => V1.4 0a (Software Version) 01 14 => V1.
3f 02 => 02 3f = 575, LAF = 575÷10 = 57.5 dBA da 01 => 01 da = 474, LAeq = 474÷10 = 47.4 dBA 6a 02 => 02 6a = 618, LAFmax = 618÷10 = 61.8 dBA 6.3 Downlink Commands WS302 supports downlink commands to configure the device. The application port is 85 by default.
3. Enable threshold alarm and set threshold value as 65 dB. ff060a00008a02 Channel Type Value ff 06 (Set Threshold Alarm) 8a 02=>02 8a = 650 650/10=65 dB 4. Reboot the device. ff10ff Channel Type Value ff 01 (Reboot) ff (Reserved) Appendix Sound Level Guidelines It’s recommended to maintain environmental noises below 70 dBA over 24 hours (75 dBA over 8-hours) to prevent noise-induced hearing loss.
