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

• XL-TrashSonar-WR Datasheet (PDF)