HC-SR04 Ultrasonic Sensor Module The HCSR04 ultrasonic sensor module is a versatile distance measuring device ideal for DIY electronics and robotics projects. It uses ultrasonic waves to measure distances from 2cm to 400cm with high accuracy, making it perfect for obstacle detection, range measurement, and automation applications. Easy to integrate with microcontrollers like Arduino and Raspberry Pi. Specifications : Voltage: 5V DC Range: 2cm to 400cm Accuracy: ±3mm Current: ≤15mA Angle: <15° Frequency: 40kHz Trigger Input: 10µs TTL pulse Echo Output: TTL pulse proportional to distance
