The Milesight EM400-MUD is a compact ultrasonic distance sensor for short ranges, 3 to 450 cm. It ships with three preset modes: standard level, bin fill level, and parking-space occupancy (LoRaWAN version only).
Why pick it
- A small blind zone, so it reads close to the sensor face in bins, hoppers and small containers.
- Accelerometer detects an open or knocked lid; a temperature sensor flags a sharp rise such as a bin fire.
- Two replaceable 9000 mAh batteries: Milesight quotes over 10 years in standard mode at a 10-minute interval, 5 years in parking mode.
Available as LoRaWAN or NB-IoT/Cat-M with GNSS. IP67, screw mounting, NFC setup.
Works with any standard LoRaWAN gateway and network server, such as the Milesight UG65 indoors or the UG67 outdoors, with alerts and dashboards on IoT Factory.
For tanks over 4.5 m, see the EM400-UDL or the EM500-UDL.





















