HaiWang HW-XC508 Microwave Radar Sensor Module, 0.5m-12m Range, 5.8GHz, TTL Output, 12V DC

The HW-XC508 requires a stable 12V DC power supply as specified. Applying 5V will not provide sufficient voltage for the microwave transmitter and signal conditioning circuitry to operate correctly, leading to unreliable detection or no output. Ensure your power source can deliver 12V with a current capability of at least 50mA for stable operation.

The module features two onboard potentiometers. One adjusts the sensitivity, which directly controls the maximum detection range (0.5m to 12m). The other adjusts the output hold time, determining how long the TTL output remains high (5V) after motion is detected, from 2 seconds up to 120 seconds. Use a small screwdriver to turn these potentiometers while testing in your target environment.

The module provides a TTL-level digital output signal. When motion is detected, the output pin goes high to 5V; otherwise, it stays at 0V. To connect to an Arduino, wire the module's output pin to any digital input pin (e.g., D2). Connect the module's GND to Arduino GND and supply 12V from an external source (not the Arduino's 5V pin). You can then read the pin's state using `digitalRead()`.

Yes, the 5.8GHz microwave signal can penetrate non-metallic materials like drywall, wood, plastic, and glass with some attenuation. This makes it suitable for concealed installation behind panels or inside fixtures. However, metal objects or walls will completely block the signal. The effective range will be reduced when penetrating materials, so testing in the final installation is recommended.

The detection angle refers to the horizontal coverage cone of the sensor. A setting of 360° provides omnidirectional coverage around the module, ideal for detecting movement anywhere in a room. Narrower angles (e.g., 90°) create a more focused detection beam, useful for monitoring a specific doorway, corridor, or zone without being triggered by movement outside the area of interest. The angle is typically adjusted via the orientation and mounting of the sensor's antenna element.