Motion & TH Sensor CoWork Series WS203

WS203 Motion & TH Sensor – Dual Sensing for Smart Occupancy & Environmental Monitoring

The Milesight WS203 is a lorawan®-enabled environmental monitoring device that combines passive infrared (PIR) motion sensing with high-accuracy temperature and humidity detection. With a compact form factor and flexible PIR field-of-view covers, it is ideal for smart offices, hospitals, classrooms, and intelligent HVAC systems. The WS203 detects motion up to 6 meters and triggers environmental data collection in real time, offering wireless, maintenance-free sensing with up to 10+ years of battery life.

Key Features

• Combined PIR-based occupancy detection and TH (temperature & humidity) monitoring
• Customizable PIR covers for flexible horizontal and vertical detection angles
• Built-in high-precision TH sensor (±0.2°C / ±2% RH accuracy)
• Data logging and 1,000-entry onboard memory with retransmission support
• Flame-retardant (UL94 V0) PC + ABS casing for safety and durability
• lorawan® Class A wireless communication with ultra-low power usage
• Supports Milesight D2D protocol for direct control without gateway
• Tool-free NFC configuration and mobile app setup
• Up to 10.8 years battery life on a single 4000mAh cell

Technical Specifications

PIR Cover Configurations (Wall Mount @ 2m)

Ideal Applications

• Smart HVAC and Comfort Optimization
• Occupancy Detection for Smart Buildings
• Hospital and Healthcare Room Monitoring
• School Classroom Environmental Control

Dual Intelligence. Single Device. Maximum Efficiency.

The WS203 enables occupancy-based environmental monitoring in a single lorawan® device—bringing smarter, energy-efficient management to your spaces. Now available through TerraQ Technologies for deployment across the MEA region.