The HC-SR04P Ultrasonic Distance Sensor Module delivers precise non-contact distance measurement from 2cm to 450cm with a 15° beam angle, making it ideal for robotics, obstacle avoidance systems, and smart automation projects. Engineered with an upgraded transducer and stable signal processing circuit, it operates reliably across a wide input voltage range of 3V to 5.5V—fully compatible with both 3.3V logic platforms like Raspberry Pi and 5V systems such as Arduino-compatible boards. The module features a clean 4-pin interface (VCC, GND, TRIG, ECHO) for direct connection without external pull-up resistors or level shifters. With a measurement refresh rate of up to 50Hz and low power consumption under 15mA during active operation, it ensures responsive performance in real-time applications. Housed on a durable green PCB with clearly labeled pins and ESD protection, it maintains accuracy across operating temperatures from -10°C to +70°C, making it suitable for both indoor prototyping and long-term embedded deployments.