Ultrasonic Distance/Level Sensor EM500-UDL

EM500-UDL Ultrasonic Distance & Level Sensor – lorawan® Monitoring for Harsh Environments

The Milesight EM500-UDL is an industrial-grade ultrasonic distance and level sensor designed for accurate, non-contact measurements of liquids or solid surfaces in challenging environments. Featuring long-range lorawan® communication and ultra-low power consumption, it offers up to 10 years of autonomous operation on a single replaceable 19000 mAh battery. With IP67 protection, internal data storage, and flexible mounting options, it’s a powerful solution for applications such as water tank level monitoring, sewage systems, and flood detection.

Key Features

• Non-contact ultrasonic level sensing with up to 10 m detection range
• ±1% FS (W model) and adaptive accuracy with temperature compensation
• IP67-rated waterproof and dustproof enclosure
• Internal 19000 mAh replaceable battery with up to 10 years of life
• 1 mm resolution and configurable data interval for granular insights
• Internal NFC and USB Type-C for local configuration
• Built-in memory for 1000 data entries and retransmission support
• Threshold and change-based alarm triggers
• Compatible with standard lorawan® gateways and Milesight IoT Cloud

Model Variants

Technical Specifications

Ideal Applications

• Water Tank & Reservoir Monitoring
• Flood Risk Detection & Drainage Systems
• Septic Tank & Liquid Waste Level Monitoring
• Silo & Storage Bin Monitoring
• Construction Material & Gravel Sensing

Non-Contact Accuracy. Field Proven. Ultra Durable.

The EM500-UDL combines precise ultrasonic sensing with rugged design and long-range lorawan® connectivity—enabling smarter, scalable monitoring for the most demanding environments. Now available from TerraQ Technologies across the MEA region.