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...
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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.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- Modbus
- Modbus is an industrial communication protocol used by many meters, sensors, PLCs and automation devices. When a product lists Modbus support, it is generally easier to integrate with existing industrial equipment that speaks the same protocol.
- ModBus-RTU
- ModBus-RTU is a common industrial protocol for sending readings and control commands over serial links such as RS485. Knowing a device uses ModBus-RTU helps you choose software libraries, data loggers, or controllers that can request and interpret its data.
- RS485
- RS485 is a robust differential serial communication standard often used in factories, farms and buildings where cables may be long or electrically noisy, and it can link many devices on a single pair of wires. When a product lists RS485, it can communicate with industrial sensors, meters and control equipment over longer distances than typical hobby serial wiring.
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Brands
Supplier page — dfrobot.com
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SEN0310 urm12 ultrasonic distance sensor ce v1.0
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SEN0310 urm12 ultrasonic distance sensor rohs v1.0
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Related Tutorials
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