DFRobot - Fermion: URM07 Ultrasonic Distance Sensor (Breakout, UART, 20-750cm)

Fermion URM07 Energy‑Efficient Ultrasonic Distance Sensor Breakout delivers reliable non‑contact distance measurement using ultrasonic echo timing, similar to biological echolocation. This compact ranging module supports a wide 3.0–5.5V supply and communicates through UART, allowing seamless integration with popular controllers such as Arduino and Raspberry Pi. A built‑in temperature sensor enables automatic compensation to improve measurement stability under changing environmental conditions. With detection capability up to 7.5 meters, extremely low standby consumption, and a lightweight 27mm × 27mm form factor, this ultrasonic ranging unit provides dependable performance for embedded sensing, robotics navigation, and energy‑sensitive IoT applications.

Ultra‑Low Power Operation for Battery Systems

This energy‑efficient ultrasonic ranging module is engineered for projects requiring long‑term operation on constrained power budgets. Average operating current remains below 5mA during continuous measurements, while standby consumption drops below 14uA. Such minimal power demand makes this distance sensing board highly suitable for battery‑powered IoT nodes, remote monitoring devices, and autonomous robotics platforms where extended uptime and energy efficiency are critical.

Integrated Temperature Compensation for Higher Accuracy

Distance measurement accuracy in ultrasonic systems can shift with air temperature and airflow. This compact ultrasonic detection module integrates a temperature sensor that enables automatic compensation within measurement calculations. Environmental temperature data improves ranging reliability and reduces deviation caused by atmospheric variation, supporting more stable results in indoor automation systems, outdoor monitoring equipment, and robotics perception tasks.

Wide Compatibility and Simple UART Interface

A standard 2.54mm pitch 4‑pin connector and UART communication interface allow easy connection with a wide range of microcontroller platforms. This embedded distance measurement board integrates smoothly into common development environments and robotics controllers while maintaining stable communication and rapid response. The streamlined structure and integrated ultrasonic probe provide a detection angle of approximately 60°, enabling efficient object detection and obstacle awareness.

Typical deployments include robotics obstacle avoidance, smart parking detection, liquid level monitoring, and distance measurement in automation systems. Reliable ranging performance, compact mechanical design, and efficient power consumption also make this ultrasonic sensing module well suited for embedded development platforms and STEM Education experimentation involving environmental perception and object detection.

• Streamlined design
• High stability
• High sensitivity
• Built-in temperature compensation
• Energy efficient operation
• Reverse polarity protection (short-term protection)
• Overvoltage protection
• Convenient connection and usage

• Robotics obstacle avoidance
• Smart parking detection
• Liquid level monitoring
• Distance measurement systems
• IoT environmental sensing
• STEM Education experiments

• Operating Voltage: 3.0 ~ 5.5V DC
• I/O Operating Mode: Open Drain (OD), integrated pull-up resistor
• Effective Range: 20 ~ 750 cm
• Direction Angle: 60 °
• Standby Current:
• Peak Current:
• Average Current:
• Distance Resolution: 1cm
• Distance Error: 1%
• Operating Temperature Range: -10 ~ 70 ℃
• Temperature Error: ± 1 ℃
• Operating Humidity Range: RH
• Acoustic Frequency: 38 ~ 42KHz
• Boot Start Time:
• Measurement Period:
• Dimension: 27mm x 27mm
• Weight: 4.2g Approx.

• Fermion: URM07 Energy‑Efficient Ultrasonic Distance Sensor Breakout (20~750cm, UART) ×1