Product Details
The C4001 millimeter - wave presence sensor operates at a 24GHz wavelength. It offers a 100° horizontal detection range, with a 16 - meter human presence detection range and a 25 - meter motion detection and distance measurement range. Ideal for human detection, environmental monitoring, and real - time monitoring projects. Compared to infrared and ultrasonic sensors, it can detect both static and moving humans. It has strong anti - interference ability, not easily affected by temperature, light, or noise. Whether a person is sitting, sleeping, or moving, the sensor can quickly detect their presence. Using Frequency Modulated Continuous Wave (FMCW) modulation, it can measure distance up to 25 meters and speed from 0.1 to 10 m/s. FMCW radar continuously emits signals, allowing for continuous distance measurement and velocity detection via the Doppler effect. It provides high - resolution measurements and is suitable for real - time monitoring. The sensor is sensitive to installation methods, with top, bottom, horizontal, and downward - tilted installation options available. Features include a 16 - meter human detection range, 1.2 - 25 - meter distance detection, 0.1 - 10 m/s velocity detection, strong anti - interference, I/O port control, serial port input/output, and a small size for easy integration. Applications cover human detection, distance and velocity monitoring, environmental and industrial automation, and real - time tracking. Specifications include an operating voltage of 3.3/5V, a 25 - meter max detection range, a 100*40° beam angle, FMCW modulation, a 24GHz operating frequency, an operating temperature of - 40~85℃, a 9600 baud rate, and a 26*30mm size. One project example is a DIY smart bathroom light using ESPHome and Home Assistant for automated lighting control. Documents available are the product wiki, communication protocol, and dimensional drawing. The shipping list includes a C4001 mmWave Presence Sensor 25m and a 15 - pin header.
Using the C4001 mmWave presence sensor is easy. First, choose an appropriate installation method. You can install it on the top, bottom, horizontally, or with a downward tilt. Make sure to follow the wiring diagram when connecting it to an Arduino Uno or other devices. When it comes to power, it can work with an operating voltage of 3.3V or 5V. The sensor is designed to detect humans within a 16 - meter presence range and 25 - meter motion range. It can also measure distance from 1.2 to 25 meters and speed from 0.1 to 10 m/s. For output control, you can use the I/O ports or the serial port. Remember, this sensor has strong anti - interference ability, but it's still sensitive to the installation. So, avoid installing it in places with strong vibrations or where it could be physically damaged. As for maintenance, keep it clean from dust and debris. You don't need to do much else, as it's built to work reliably in various temperatures from - 40℃ to 85℃. If you're using it for a project like the DIY smart bathroom light, follow the project instructions carefully. And always refer to the product wiki, communication protocol, and dimensional drawing for more detailed information.
