EM400-UDL is a non-contact ultrasonic distance/level sensor for outdoor liquid measurement. It offers ±1% accuracy across a 0.25–10m range with selectable narrow/wide beam probes, ideal for water level monitoring in tanks, rivers and reservoirs—wire-free and maintenance-free. IP67-rated, 10-year battery life with dual 9000mAh batteries, supporting LoRaWAN® or NB-IoT/Cat.M connectivity.
Product Features
• Flexible Range Options: 25-500cm or 25-1000cm selectable probes, narrow (C) or wide (W) beam patterns
• Dual Wireless Connectivity: LoRaWAN® (15km range) or NB-IoT/Cat.M (GNSS positioning) versions
• Decade-Long Battery: Dual 9000mAh replaceable batteries, up to 10-year lifespan (LoRaWAN®)
• Harsh Environment Ready: IP67 enclosure, -30°C~+70°C operating range, damp-proof internal coating
• Zero-Touch Configuration: NFC one-touch setup, tilt monitoring, threshold alarms, OTA management
Purchase Ways
| Parameter | Standard Version (C050/C100) | Pro Version (W050/W100) |
|---|---|---|
| Measuring Range | 25-500cm (C050) / 25-1000cm (C100) | 30-500cm (W050) / 50-1000cm (W100) |
| Accuracy | ±(1+0.3%×S) cm | ±1% FS (-30°C~+65°C) |
| Operating Temperature | -15°C ~ +60°C | -30°C ~ +65°C |
| Beam Characteristics | Narrow Beam, Strong Anti-interference | Wide Beam, Large Coverage Area |
| Housing Color | Black-Gray | Gray |
| Weight | 252.7g | 246.6g |
| Shared Core Parameters | |
|---|---|
| Parameter | Specification |
| Communication | LoRaWAN® (15km) / NB-IoT/Cat.M (GNSS Positioning) |
| Battery | 2×9000mAh ER26500, 10 Years for LoRaWAN® Version / 5-10 Years for NB Version (Depends on Mode) |
| Resolution | 1mm Distance + 0.1°C Temperature (-40°C~+125°C NTC Sensor) |
| Protection & Dimension & Housing | IP67, 118×65×80mm, ABS+PC Housing |
| Features | 3-axis Accelerometer (Tilt Monitoring), NFC Configuration, Threshold Alarm |
| Installation & Certification | Flat Surface Screw Mounting, CE/FCC Certified |
Application scenarios
• Water Tank Monitoring — Real-time fill level tracking in municipal and industrial storage tanks, eliminating manual inspection and overflow risks
• River & Reservoir Level — Hydrological monitoring in static or slow-flowing water bodies for flood warning and water resource management
• Wastewater Management — Sewer and drainage level measurement in humid, corrosive environments where wired sensors fail
• Agricultural Irrigation — Canal and pond level control for automated water distribution systems across large rural areas
EM400-UDL Datasheet
