DFRobot
URM12 Ultrasonic Sensor(1500cm RS485)
The URM12 is a long-range ultrasonic distance sensor from DFRobot, designed for distance measurement and obstacle avoidance applications. With a detection ra...
The URM12 is a long-range ultrasonic distance sensor from DFRobot, designed for distance measurement and obstacle avoidance applications. With a detection range of 70–1500 cm, RS485 communication interface, and standard Modbus-RTU protocol support, it is well suited for industrial-grade level measurement, robot navigation, and outdoor sensing.
Key Features
- Long Detection Range – 70 cm to 1500 cm (15 metres)
- RS485 Interface – Standard Modbus-RTU communication protocol
- IP65 Rated – Dust-tight and protected against water jets
- 1 cm Resolution – With 1% accuracy
- 3 Hz Measuring Frequency – Up to 3 readings per second
- 15° Detection Angle – ±2° at −6 dB
Specifications
- Power Supply – 9–24 V DC
- Rated Power – 4.8 W
- Detection Range – 70–1500 cm
- Resolution – 1 cm
- Accuracy – 1%
- Direction Angle – 15° ±2° (−6 dB)
- Measuring Frequency – 3 Hz max
- Communication – RS485 (Modbus-RTU)
- IP Rating – IP65
- Operating Temperature – −10°C to +70°C
Ideal For
- Liquid level measurement
- Robot obstacle avoidance
- Industrial distance sensing
- Outdoor environmental monitoring
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs, and automation devices. Modbus support matters because it can make the controller easier to integrate with existing industrial equipment.
- ModBus-RTU
- ModBus-RTU is a common industrial protocol for sending sensor readings and control commands over serial links such as RS485. Knowing the sensor uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its readings.
- RS485
- RS485 is a robust wired serial communication standard often used in factories, farms, and buildings where cables may be long or electrically noisy. It matters because it lets this controller connect to industrial sensors, meters, and control equipment over longer distances than typical hobby serial wiring.
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Supplier page — dfrobot.com
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