DFRobot
XL-TrashSonar-WR(MB7139)
The MB7139 XL-TrashSonar-WR is a weather-resistant ultrasonic sensor specifically designed for waste bin fill-level monitoring. It measures the distance to t...
The MB7139 XL-TrashSonar-WR is a weather-resistant ultrasonic sensor specifically designed for waste bin fill-level monitoring. It measures the distance to the nearest target from 20 cm to 350 cm with centimetre resolution at a fast 10 Hz read rate, outputting data via analogue voltage, pulse-width, or RS232 serial.
Housed in a rugged PVC enclosure rated IP67, the sensor fits standard ¾-inch electrical PVC pipe fittings for easy mounting inside bins and containers. Factory-calibrated narrow beam patterns and advanced noise rejection provide reliable readings in harsh outdoor environments.
Key Features
- Designed for Waste Monitoring – Optimised for measuring fill levels in bins and containers
- 20–350 cm Range – Short to mid-distance detection with 1 cm resolution
- 10 Hz Read Rate – Fast, responsive measurements
- IP67 Weather Resistant – Rugged PVC housing, sealed against water and dust
- Three Output Modes – Analogue voltage, pulse-width, and RS232 serial
- Real-Time Auto-Calibration – Compensates for voltage, humidity, and ambient noise
- Low Power – 3.4 mA average current draw
- 200,000+ Hours MTBF – Designed for long-term, maintenance-free operation
Specifications
- Sensor Frequency – 42 kHz ultrasonic
- Detection Range – 20–350 cm
- Resolution – 1 cm
- Read Rate – 10 Hz
- Operating Voltage – 3.0–5.5 V
- Average Current – 3.4 mA
- Operating Temperature – −40 °C to +65 °C
- Ingress Protection – IP67
- Compliance – RoHS
Ideal For
- Smart waste bin fill-level monitoring
- IoT waste management and collection optimisation
- Container and tank level sensing
- Outdoor environmental monitoring
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- IP67
- An ingress protection rating meaning the enclosure is dust-tight and can survive temporary immersion in water under specified test conditions. This matters when choosing a sensor for outdoor, wet, or wash-down environments.
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Brands
Supplier page — dfrobot.com
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Related Tutorials
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