User Guide

4
1. Product Introduction
1.1 Overview
EM400-UDL is a designed non-contact ultrasonic distance sensor featuring LoRaWAN
®
. With
this low power consumption technology, EM400-UDL can work up to 10 years with two 9000
mAh batteries. With multiple probes optional and different detecting ranges, it can satisfy
different requirements.
With high protection IP rating and waterproof enclosure, EM400-UDL is widely used for outdoor
applications such as water level, fill level of tanks and silos, presence of objects or snow level.
Combining with Milesight LoRaWAN
®
gateway and Milesight IoT Cloud solution, users can
manage all sensor data remotely and visually.
1.2 Features

Optional probes vary from 25 to 1000cm for multiple applications
 Equipped with NTC Thermistor for the detection and alarm of burning
 Built-in 3-axis accelerometer sensor to monitor device tilt status

Damp-proof coating inside and IP67 waterproof enclosure for outdoor applications
 Built-in two 9000 mAh replaceable batteries and work for 10 years without replacement
 Ultra-wide-distance wireless transmission up to line of sight of 15km

Equipped with NFC for one touch configuration, support card emulation mode
 Function well with standard LoRaWAN
®
gateway and network servers
 Compatible with Milesight IoT Cloud
2. Hardware Introduction
2.1 Packing List
1 × EM400-UDL
Device
2 × Mounting
Kits
1 × Warranty
Card
1 ×
Quick Guide
If any of the above items is missing or damaged, please contact your sales representative.