Small-Angle Ultrasonic Ranging Sensor for Water Level Detection (25-800cm, IP67, 15° FOV)

The Small-Angle Ultrasonic Ranging Sensor is a waterproof distance sensor designed specifically for non-contact liquid level monitoring. Featuring a long detection range and a narrow beam angle, it is ideal for makers, students, and engineers developing automated water tank monitors and outdoor telemetry systems.

Extended 25 to 800cm range

The sensor measures distances from 25 cm up to 800 cm with an accuracy of plus-or-minus 2 cm. This broad measurement window makes it suitable for both shallow containers and deep storage reservoirs.

Focused 15-degree narrow beam

A tight 15-degree field of view directs the ultrasonic signal straight to the target surface. This narrow angle reduces unwanted acoustic reflections from container sidewalls and internal obstacles.

IP67 waterproof housing

Equipped with an IP67-rated enclosure, the module is sealed against dust and water ingress. This rugged design ensures reliable operation in damp environments and outdoor weather conditions.

Standard UART serial interface

The sensor outputs distance data via a UART interface for clean, direct communication. This allows straightforward connection to a wide variety of microcontrollers and single-board computers.

Downloads & documentation

• Product wiki (DFRobot)