This HC-SR04 ultrasonic distance sensor module delivers reliable, non-contact distance measurements from approx. 2 cm up to 400 cm, using 40 kHz ultrasonic pulses. Operating at 5 V DC with minimal current draw (~15 mA typical) it interfaces via simple trigger and echo pins. Its compact size (≈ 45×20×15 mm) and lightweight design make it ideal for robotics, automation, smart cars, obstacle detection, liquid level sensing and DIY projects.
- Non-contact distance measurement: Detect objects or measure range from approximately 2 cm to 400 cm.
- Easy interface: Trigger input & echo output (TTL) — ideal for Arduino, Raspberry Pi, microcontrollers and robotics platforms.
- Low-voltage operation: Designed for 5 V DC supply and low current draw (~15 mA) for efficient integration.
- Compact & lightweight: Approx. 45 × 20 × 15 mm footprint — fits mobile robot chassis, smart car kits, level-sensing containers.
- Robust detection: Works regardless of object colour, transparency or lighting — ideal for dark or reflective surfaces.
- Wide applications: From DIY robotics and automated smart car obstacle avoidance to liquid level monitoring, security systems, and industrial automation.
- Accurate & repeatable: Offers resolution down to ~3 mm (typical) when correctly configured
