Q1: What is a 24GHz mmWave human presence sensor?
A1: It is a radar-based sensor that uses millimeter-wave signals to detect human presence, including very slight movements like breathing, even when a person is sitting still.
Q2: How is it different from PIR motion sensors?
A2: Unlike PIR sensors that only detect motion, mmWave sensors can detect both moving and stationary humans, providing more accurate and continuous presence detection.
Q3: Does it require a hub or gateway?
A3: No, this device connects directly to WiFi (2.4GHz) and works with Tuya Smart or Smart Life app.
Q4: Can it detect someone who is not moving?
A4: Yes, mmWave technology can detect micro-movements such as breathing, making it ideal for scenarios like sleeping or working at a desk.
Q5: What is the detection range?
A5: Typically, 24GHz mmWave sensors can detect presence within 3–10 meters depending on installation and environment.
Q6: Does it work through walls or glass?
A6: Yes, mmWave signals can penetrate non-metal materials such as glass, plastic, and drywall, ensuring reliable detection.
Q7: Is it safe for human use?
A7: Yes, the sensor uses low-power electromagnetic waves and is completely safe, with no camera or privacy concerns.
Q8: Can it be used for smart home automation?
A8: Yes, it can trigger lights, air conditioning, alarms, and other smart devices based on human presence.
Q9: Does it support voice assistants?
A9: Yes, when connected via Tuya ecosystem, it supports Alexa and Google Assistant integration.
Q10: How is it powered?
A10: It uses a 5V USB power supply, making installation simple and flexible.
Q11: Where can this sensor be installed?
A11: It supports surface mounting and can be installed on ceilings, walls, or desktops for optimal coverage.
Q12: Will it be affected by lighting or temperature?
A12: No, mmWave sensors work reliably in darkness, strong light, smoke, or temperature changes.