I often run into friends asking… Millimeter-wave radar Does this product emit radiation? And at what power level does millimeter-wave radar become harmful to the human body?

Today, I’ll provide a brief overview of these issues for everyone. Millimeter-wave radar 。

Millimeter-wave radar does indeed emit radio waves—also known as radar waves or electromagnetic waves—during operation, and these waves are classified as non-ionizing radiation. With regard to the radiation emitted by millimeter-wave radar, the following points can be addressed:

I. Types of Radiation and Their Effects
Radiation type: The radiation emitted by millimeter-wave radar is non-ionizing. Unlike ionizing radiation (such as X-rays and gamma rays), It does not directly damage DNA or cellular structures, and therefore poses a relatively low potential risk to human health.
Degree of impact: The radiation levels of millimeter-wave radar are relatively low, well below international safety standards. Under normal operating conditions, the health risks posed by this type of radiation are extremely minimal and can be disregarded.
II. Operating Principle
Millimeter-wave radar calculates a target’s distance, velocity, and bearing by transmitting electromagnetic waves at a specific modulated frequency generated by a high-frequency circuit and receiving the waves reflected back from the target. This operating principle is similar to how bats or dolphins use ultrasound to sense their environment, except that radar employs electromagnetic waves rather than sound waves.
III. Safety Assessment
Millimeter-wave radar typically operates at very low power, and its radiated energy is widely dispersed in space, without forming a concentrated source of radiation. Consequently, under normal operating conditions, the radiation emitted by millimeter-wave radar does not pose any significant health risks to humans.
It should be noted that, although millimeter-wave radar radiation poses minimal health risks to humans, prolonged close-range exposure or specific operating conditions—such as radar malfunctions or abnormal power increases—may still present potential safety hazards.
IV. Practical Applications and Protective Measures
Millimeter-wave radar is widely used in autonomous vehicles, security surveillance, and other fields. In these applications, a series of measures are typically implemented to ensure the radar’s safety and reliability, including regular maintenance, fault detection, and radiation-level monitoring.
For the average user, there is no need to be overly concerned about the radiation emitted by millimeter-wave radar. Under normal operating conditions, simply maintain an appropriate distance from radar equipment and comply with applicable safety regulations.
In summary, millimeter-wave radar emits non-ionizing radiation during operation, but this type of radiation poses very little risk to human health. Under normal operating conditions, millimeter-wave radar can be considered safe. Nevertheless, potential safety risks should still be monitored, and appropriate protective measures should be implemented.

Below, we’d like to introduce our company’s 60 GHz millimeter-wave radar–based human‑detection products: 60 GHz millimeter-wave radar for fall detection, 60 GHz millimeter-wave radar for respiratory and heart‑rate monitoring, and 60 GHz millimeter-wave radar for occupancy‑presence detection. (Click on the images to go directly to the corresponding product pages.)

Our company's Millimeter-Wave Radar-Based Human Fall Detection It is an IoT sensor device that monitors falls among individuals within a fixed space.

This device uses 60 GHz millimeter-wave radar technology to detect whether individuals within a specified area have fallen, and is equipped with a built-in intelligent learning algorithm.

It not only avoids false alarms caused by fans and air-conditioning airflow, but also directly reports abnormal detection results to the upper-level gateway device when a person is detected falling.

This radar product leverages millimeter-wave radar technology to enable human biometric sensing and the detection of respiratory and cardiac rates. By simultaneously capturing Doppler parameters from human motion and physiological metrics, it provides wireless monitoring of personnel status in specific scenarios. The device connects to the cloud via Wi‑Fi, integrating with the Alibaba Cloud IoT platform. Through its data‑forwarding service, it relays real-time data streams to the cloud.

Both the transmit and receive antennas of the radar module are single-element antenna configurations, which are particularly well suited for bedside installation and provide wide coverage. This radar product features the following operational characteristics:

It can detect vital signs related to respiration and heart rate in bedridden patients.

It can perform both manned and unmanned reconnaissance, ensuring real-time output.

It can detect significant body movements and output the results.

It can detect the risk of hypoventilation, weak breathing, or apnea and issue an early warning.

After connecting to WiFi, data is forwarded via the cloud interface and a communication protocol is provided.

The product has a low output power and low energy consumption.

Millimeter-wave radiation has low power and poses no harm to the human body.

The product is unaffected by factors such as light, dust, and temperature, offering excellent privacy.

This product is a millimeter-wave ranging radar that offers high precision (at the millimeter level), long detection range, and immunity to lighting conditions. It calculates target distance by measuring the time difference between the radar’s transmitted electromagnetic waves and the received reflected signals, resulting in greater accuracy and reduced false‑negative rates. The device can be used for occupancy detection in conference rooms, hotels, and elevators.