4 Pack Waterproof Ultrasonic Distance Sensor Module With Wires For Arduino, 5m Range, 25cm Blind Zone, High Accuracy, Compact 41mm By 28.5mm, DC 5V Power

Four-Pack Waterproof Ultrasonic Sensor for Arduino Projects
✔️ 5m max distance, 25cm blind zone, 2.5m lead, 41mm by 28.5mm, DC 5V

This compact ultrasonic distance sensor module provides precise range finding for Arduino, Raspberry Pi, and other microcontroller projects. Its waterproof closed-line probe is designed for humid or harsh measurement environments, making it ideal for outdoor robotics, automation projects, and education labs.

✅ 5 m maximum distance with ~0.5 cm resolution
✅ Waterproof closed-line probe for humid environments
✅ Power: DC 5V, with 2.5 m lead length
✅ Compact footprint 41 mm × 28.5 mm (1.61 in × 1.12 in)
✅ Trig and Echo pins for Arduino compatibility
✅ Operating range -10 to 70 °C; storage -20 to 80 °C

💡 What is an ultrasonic distance sensor and how is distance measured?

This handy device uses sound waves to gauge distance in real-world projects. - Time-of-flight measurement using 40 kHz ultrasonic pulses. - Echo time translates to distance using the speed of sound in air. - MCU-friendly with Trig and Echo pins for easy Arduino integration. - Handy for obstacle avoidance, range finding, and outdoor sensing in tough environments.