Motion, temperature and humidity sensor
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Product code: WS203-868M
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Code 39:
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Milesight WS203-868M is a wireless LoRaWAN occupancy, temperature, and humidity sensor designed for smart offices, buildings, hospitals, and other spaces requiring room utilisation monitoring. The PIR sensor detects movement at a range of up to 6 m, while interchangeable covers allow the detection field to be adapted to the installation location.
The WS203 measures temperature within a range of −20…+60°C with a typical accuracy of up to ±0,2°C and humidity from 0–100% RH with a typical accuracy of ±2% RH. The device features storage for 1000 records, data retransmission, Milesight D2D, NFC configuration, and a 4000 mAh battery providing up to approximately 10,7 years of operation under EU868/SF7 test conditions.
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Shipping costs are not included in the price.
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WS203 — Space Utilisation and Environmental Condition Monitoring
Milesight WS203 is a wireless sensor combining PIR motion and occupancy detection with accurate temperature and humidity measurement.
The device makes it possible to determine room utilisation and monitor environmental conditions at the same time. Data transmitted via LoRaWAN can be used for space monitoring, occupancy analysis, and control of HVAC systems and building automation.
Occupancy and Environmental Conditions in One Device
PIR Detection up to 6 m
The passive infrared sensor detects the movement of people or animals and makes it possible to determine whether the monitored space is being used.
Temperature and Humidity
Built-in environmental sensors enable simultaneous monitoring of thermal comfort without the need to install an additional device.
Up to 10,7 Years of Operation
A 4000 mAh battery and energy-efficient LoRaWAN communication enable many years of operation without a permanent power supply.
Where Can the WS203 Be Used?
PIR Sensor with Adjustable Detection Area
PIR Covers Adapted to the Room Layout
The WS203 works with different PIR lens covers that allow the monitoring area to be reduced or extended depending on the installation location.
This makes it possible to better adapt the sensor to a small room, corridor, workstation, or larger open space while reducing unwanted detection outside the area of interest.
Accurate Temperature and Humidity Measurement
Occupancy-Based HVAC Control
Combining occupancy information with temperature and humidity measurements allows the WS203 to be used as part of energy-efficient building automation.
The system can, for example, adjust heating, ventilation, or air conditioning operation depending on whether the room is currently occupied and the conditions within it.
Local Response Without Waiting for the Cloud
The WS203 supports Milesight D2D, enabling an event to be transmitted directly to a compatible Milesight device without using a LoRaWAN gateway or supervisory system.
Occupancy detection can therefore directly trigger local automation, such as lighting, a relay, or another control component.
1000 Records and Retransmission
1000 Records
The WS203 can locally store up to 1000 historical records.
Retransmission
Data stored during temporary loss of connectivity can be retransmitted after communication with the LoRaWAN network is restored.
Greater Data History Continuity
Local storage reduces the risk of gaps in environmental data during temporary network problems.
Communication, Power Supply and Design
* For EU868, the manufacturer declares approximately 10,7 years of operation at SF7 and approximately 5,4 years at SF10. Test conditions: 30-minute reporting interval, 64 PIR triggers per day, LED disabled, and a temperature of 25°C. Actual battery life depends on configuration and communication conditions.
WS203 in a Smart Building System
Occupancy, temperature, and humidity information can be transmitted via LoRaWAN to a gateway and then to a central monitoring and building automation platform.