The HRLV-MaxSonar-EZ4 (MB1043) is a compact ultrasonic range sensor with 1 mm resolution, measuring distances from 300 mm to 5000 mm at a 10 Hz read rate. It features the narrowest beam width in the HRLV-MaxSonar-EZ sensor line, making it ideal for detecting larger objects while ignoring smaller ones.

The sensor provides virtually noise-free readings through high-output acoustic power, continuously variable gain, real-time automatic calibration, waveform signature analysis, and noise rejection algorithms. Multiple output formats are available: analogue voltage, serial (RS232 or TTL), and pulse width.

Key Features

• 1 mm Resolution – High-precision millimetre-level distance measurement
• 300–5000 mm Range – Objects closer than 300 mm typically read as 300 mm
• Narrowest Beam – Most focused beam in the HRLV-MaxSonar-EZ line, best for large object detection
• Multiple Outputs – Analogue voltage, RS232 or TTL serial, and pulse width
• Real-Time Auto Calibration – Compensates for voltage, humidity, and ambient noise
• Firmware Noise Filtering – Enhanced clutter rejection and noise tolerance
• Internal Temperature Compensation – With optional external sensor (HRMaxTemp)
• Compact Module – Less than one cubic inch with mounting holes

Specifications

• Sensor Frequency – 42 kHz ultrasonic
• Range – 300–5000 mm
• Resolution – 1 mm
• Read Rate – 10 Hz
• Supply Voltage – 2.5–5.5V
• Current Draw – 3.1 mA average
• Operating Temperature – 0°C to +65°C
• Compliance – RoHS

Ideal For

• Large object detection and proximity sensing
• Precision distance measurement
• Robotics and autonomous navigation
• Level sensing and fill monitoring

Resources

• HRLV-MaxSonar-EZ4 Datasheet (PDF)