EM400-UDL Ultrasonic Distance Sensor NB-IoT
The Milesight EM400 Series is a versatile long-range distance measuring sensor designed for precise level and distance monitoring in smart agriculture, industrial automation, and infrastructure applications. Available in LoRaWAN® and NB-IoT variants, the EM400 Series provides flexible connectivity options for both gateway-based and direct cellular deployments. Integrated with Microclimates EnvOS®, it enables real-time distance measurement, tilt detection, temperature monitoring, alerts, and historical reporting for remote asset and environmental monitoring systems.
Features
Selectable probe ranges from 25 cm to 1000 cm for different application needs
High-precision distance measurement with up to 1 mm resolution
Built-in NTC temperature sensor for overheating detection and safety alerts
Integrated 3-axis accelerometer for tilt and device position monitoring
IP67-rated waterproof enclosure with internal damp-proof coating for outdoor use
Ultra-long-range LoRaWAN® transmission up to ~15 km line-of-sight
Dual 9000 mAh ER26500 Li-SOCl₂ batteries for up to 10+ years of operation
NFC-based one-touch configuration and mobile app setup support
Multi-band LoRaWAN® support (US915, EU868, AU915, AS923, etc.)
OTAA/ABP Class A communication protocol
Wide operating temperature range: -30°C to 70°C
Seamless integration with Microclimates EnvOS® for monitoring, alerts, automation, and reporting