Hi-link HLK-LD1040C 10G Radar Sensor Module

The Hi-Link HLK-LD1040C is a 10GHz X-band Doppler radar sensor module designed for motion and presence detection. It offers reliable non-contact sensing, wide-angle coverage, and low power consumption for automation, IoT, and embedded applications.

Key Technical Features – Hi-link HLK-LD1040C 10G Radar Sensor Module

Operating Frequency: ~10.525 GHz (X-band Doppler radar) – common for motion detection modules.
Technology: Doppler radar — detects motion by measuring frequency shifts of reflected waves from moving targets.
Detection Range: Typically around 3–5 m radius (varies with installation and environment).
Detection Angle: ~110° ±10°, good for ceiling-mounted / wide area motion detection.
Power Supply: 3.3 V to 12 V DC (wide input) – flexible for many low-power designs.
Operating Current: Approx. ~10 mA at 5 V.
Output: Digital logic output (HIGH when motion is detected, around 3 V).
Temperature Range: Typically around −20 °C to +70 °C

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The Hi-Link HLK-LD1040C is a 10GHz X-band Doppler radar motion sensor module engineered for motion detection, presence sensing, and occupancy monitoring in embedded systems. Operating at approximately 10.525 GHz, the module uses Doppler radar technology to detect movement by analyzing frequency shifts in reflected microwave signals.

Unlike infrared (PIR) or optical sensors, the HLK-LD1040C provides non-contact detection without requiring line-of-sight, making it more reliable in environments where lighting conditions, obstacles, or temperature variations may affect traditional sensors.

With a wide detection angle (~110°) and a typical detection range of 3–5 meters, the module is ideal for smart lighting, security systems, HVAC automation, and IoT-based presence detection applications. Its wide input voltage range (3.3V–12V) and low current consumption make it flexible for integration into various electronic designs.