Ultrasonic Distance Sensor – 3–450 cm Range : EM400-MUD | Milesight

The Milesight EM400-MUD is a multifunctional ultrasonic distance sensor designed for short- and medium-range measurements in demanding environments. It offers a 3 to 450 cm detection range with a small blind zone and several preconfigured application modes for industrial use cases. Thanks to its IP67-rated enclosure, moisture-protected electronics and two replaceable 9000 mAh batteries delivering up to 10 years of autonomy, it is a highly reliable solution for waste container monitoring, parking availability detection, remote level measurement and equipment status supervision. The sensor is available in both LoRaWAN® and NB-IoT/Cat.M versions, allowing flexible integration into a wide variety of IoT networks.

Benefits :

• Wide 3–450 cm measurement range with 1 mm resolution for precise level monitoring.
• Small blind zone enabling detection in compact containers and tight spaces.
• Fire detection capability using an integrated NTC temperature sensor.
• Tilt and movement detection via an embedded 3-axis accelerometer.
• Outdoor-ready IP67 design with damp-proof internal coating for harsh environments.
• Up to 10 years battery life without replacement, depending on mode and reporting interval.
• Preconfigured application modes such as standard, bin and parking (depending on version).
• NFC configuration for easy commissioning and field adjustments.
• NB-IoT/Cat.M version with integrated GNSS for tracking and security.

Key Features :

• Measurement technology : ultrasonic sensor with 60° beam angle.
• Detection range : 3 to 450 cm.
• Accuracy : ±(1 + 0.3% × distance) cm between –15°C and 60°C.
• Resolution : 1 mm.
• Sensors on board :
  • 3-axis accelerometer (tilt/position monitoring)
  • NTC temperature sensor (–40 to 125°C, 0.1°C resolution)
• Enclosure : ABS+PC UL94 V0, IP67, rugged and waterproof.
• Battery life (LoRaWAN®) :
  • Standard mode: up to 10 years (typical 10-minute interval)
  • Bin mode: up to 10 years (typical 20-minute interval)
  • Parking mode: around 5 years (approx. 12 triggers per day)
• Battery life (NB-IoT/Cat.M) : around 10 years (TCP/UDP) or 5 years (MQTT/AWS), depending on reporting profile.
• Power supply : 2 × ER26500 9000 mAh Li-SOCl₂ replaceable batteries.
• Configuration : NFC (mobile app) and downlink commands.
• Operating temperature : –30°C to +70°C; relative humidity ≤ 95% non-condensing.
• Dimensions : 118 × 65 × 32.5 mm.
• Weight : 181.4 g (including batteries).

Typical Applications :

• Smart waste management : fill-level monitoring in medium and large garbage bins.
• Smart parking : vehicle presence detection in outdoor or indoor parking spaces (LoRaWAN® version).
• Industrial monitoring : material level measurement, position monitoring, or distance sensing in production and logistics.
• Asset and site security : detection of abnormal tilt, movement or tampering.
• Smart City and IoT deployments : integration into LoRaWAN® or NB-IoT/Cat.M platforms for large-scale telemetry projects.

Why choose EM400-MUD :

The EM400-MUD stands out by its combination of measurement performance, robust mechanical design, and very long battery life. Its compact IP67 housing, integrated temperature and tilt sensing, and selectable operating modes make it a highly versatile building block for Smart City, Smart Waste, Smart Parking and industrial telemetry projects. For system integrators and operators, it offers a reliable way to deploy large fleets of sensors with minimal maintenance and predictable lifetime.