Weatherproof Ultrasonic Sensor w/ Separate Probe

DFRobotSKU: RB-Dfr-720
Manufacturer #: SEN0208

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Sale price ¥2,750

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  • Weatherproof Ultrasonic Sensor w/ Separate Probe
  • Features detectable ranges from 0.2 to 6m
  • Offers 1 mm resolution
  • Works at an input voltage of 3.3 to 5V DC

The Weatherproof Ultrasonic Sensor w/ Separate Probe is suitable for outdoor applications such as car reversing sensors, security alarms, industrial inspection, etc.

As most other ultrasonic distance sensors aren't waterproof it can be a problem as you need your project to withstand the elements outdoors. No need to worry anymore! This sensor is weatherproof and the latest Version 2.0 can work at 3.3-5 V, while it provides several modes to choose from.

Weatherproof Ultrasonic Sensor w/ Separate Probe - Click to Enlarge


  • 1 x Arduino UNO
  • 1 x Battery capacity indicator
  • Arduino IDE V1.6.9 Software


  • 42 x 29 x 12 mm / 1.26 x 0.87 x 0.36 inches (L x W x H)

Zip file


  • Operating voltage: DC3.0-5.5 V
  • Static current: >8 mA
  • Operating current: 30 mA
  • Operating range: 20 cm ~ 6 m
  • Resolution: 1 mm
  • Detecting Angle: < 75°
  • Operating Temperature: -20 ~ 70 °C
  • Cable Length: 2.5 m
  • Weight: 54 g

Customer Reviews

Based on 5 reviews
Overall good

Does what it's supposed to do and seems to do it well. However keep in mind that all kinds of "interference" that obstructs from making a clear reading like moving objects/less easily detectable objects like clothing/isolation/water… needs to be filtered out yourself, which is CPU consuming or requires a dedicated extra MCU for filtering.

Makerspace project

We are using this for a makerspace project and it works exactly how we need it


Works great, using with an arduino and utilizing a median filter library to stabilize readings. Great price and fast delivery.

Good product

The pinout is the exact same as the more common HC-SR04 ultrasonic range finder, so I was easily able to replace the component in-place on my breadboard. This one seems slightly noisier than the ones with a separate transmitter/receiver, but this one has a much more convenient form factor and a more weatherproof design.

Works OK

really weatherproof

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