Feature: 1. WORKING PRINCIPLE: The sensor realize the wireless perception of personnel status in a specific place through synchronous perception technology of Doppler parameters of personnel movement and physiological parameters of personnel, and realize scene linkage through wireless signal notification gateway 2. HUMAN SENSING: Human presence sensor is based on millimeter wave Doppler system to realize human biological motion perception and human biological perception, based on enhanced Doppler signal processing system 3. APPLICABLE SCENARIO: Human presence sensor is suitable for home, hotel, office and other places(not affected by temperature, humidity, noise, airflow, dust, light and other factors) 4. WIRELESS CONNECTIVITY: WiFi human presence sensor with 2.4GHz transmission frequency, 2dBm transmission power, and 100m communication distance in open space. Support OTA upgrades and network configuration button 5. ACCURATE DETECTION: Utilize millimeter wave Doppler detection with a 3‑5m radius and 180° horizontal detection angle, operating in different modes like presence or absence, active or static Specification: Item Type: Human Presence Sensor Wireless Type: WIFI Transmission Frequency: 2.4GHz Transmission Power: 2dBm Communication Distance: 100m(open space) Indicator Light: Red and green dual color Power Supply: 5V AC Detection Method: Millimeter wave doppler detection Radius: Approx. 3-5meter Detection Angle: Horizontal 180° Application Mode: Presence or absence, active or static OTA Upgrade: Support Network Configuration Button: Support Appearance Size: Approx. 80 x 42mm / 3.15 x 1.65in Ceiling Installation Height: 2-3meter(horizontal deviation angle ≤5°). Package List: 1 x USB Cable 1 x Machine 2 x Screws 2 x Wall Plugs 1 x Card Pin 1 x User Manual 2 x Accessories