Cellular Micro Ultrasonic Distance Sensor (EM400-MUD)
A high-precision micro ultrasonic distance and level sensor supporting dual network deployment configurations. Encased in an IP67-rated flame-retardant housing and equipped with integrated tilt, temperature, and optional GNSS tracking, it provides professional non-contact clearance and fill telemetry for outdoor waste bins, tanks, and structural environments.
Key Highlights
- Ultrasonic Detection Range: Non-contact distance measurement covering a wide 3 to 450 cm span.
- Integrated Multi-Sensor Architecture: Tracks distance, device tilt/status, and ambient temperature simultaneously.
- Dual Connectivity Version Options: Separate architectural support for both LoRaWAN and NB-IoT/Cat M configurations.
- Extensive Extended Battery Life: Up to 10 years operational lifespan depending on configuration modes.
- Robust Outdoor Rated Protection: Built to survive demanding environments with a sealed IP67 rating.
Product Overview
The hardware functions as a professional, compact micro ultrasonic distance sensor explicitly engineered to deliver non-contact spatial range auditing and volumetric fill-level tracking across smart waste systems, storage tanks, and clearance monitoring sites. It utilizes a high-performance ultrasonic transceiver mechanism supporting an updated operational range extending from 3 cm to 450 cm with a data resolution of 1 mm and an acoustic beam angle of 60°. Outfitted with a multi-network architecture option.
The device is deployed across universal long-range wireless networks as an OTAA/ABP Class A node or through global cellular bands supporting Cat M1 and Cat NB2 protocols. The internal hardware aggregates an array of peripheral diagnostic instruments including a built-in temperature sensor capturing -40°C to 125°C, an internal tilt-sensitive multi-axis accelerometer, and an integrated GNSS positioning module outputting precise coordinate attributes with a 0.000001 resolution on cellular variants. Encased inside an industrial-grade IP67 weatherproof ABS+PC (UL94 V0) black-gray housing, the node weighs exactly 181.4g with batteries included and handles flat-surface screw installations, maintaining localized threshold logic alarms and data retransmission features driven by dual 9,000 mAh ER26500 lithium power cells.
Key Features & Capabilities
Enterprise-grade technology designed for mission-critical operations
Versatile Multi-Network Support
Features separate design models for traditional long-range wireless or cellular bands including Cat M1 and Cat NB2 formats.
Complete Environmental Sensing
Tracks spatial clearance, real-time device orientation states, and temperature tracking parameters ranging from -40°C to 125°C.
NFC Wireless Management Layer
Integrates near-field communication connectivity loops for frictionless on-site smartphone app configuration and parameter modifications.
Advanced Built-In Software Rules
Supports programmatic calibration settings, immediate threshold alerts, and structural tilt or distance switches locally on the node.
Flexible Off-Grid Installations
Engineered for mounting directly on flat surfaces via screw configurations, running seamlessly on replaceable lithium batteries.
Technical Specifications
Key technical details and performance specifications
| Specification | Details |
|---|---|
| Product Type | Micro Ultrasonic Distance Sensor |
| Model Number | EM400-MUD |
| LoRaWAN Frequency Bands | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
| LoRaWAN Tx Power | 16 dBm (868 MHz)/20 dBm (915MHz)/19 dBm (470MHz) |
| LoRaWAN Sensitivity | -137dBm @300bps |
| LoRaWAN Mode & Class | OTAA/ABP Class A |
| Cellular Band (Cat M1) | B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B26/B27/B28/B66/B85 |
| Cellular Band (Cat NB2) | B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B25/B28/B66/B71/B85 |
| SIM Slot Specification | 1 (Micro SIM-3FF), 1.8V |
| Cellular Application Mode | TCP/UDP/MQTT/AWS |
| Distance Detection Range | 3 ~ 450 cm |
| Distance Detection Accuracy | ± (1+0.3%*S) cm, S=distance (-15°C ~ 60°C) |
| Distance Detection Resolution | 1 mm |
| Ultrasonic Beam Angle | 60° |
| Device Position Status | Normal/Tilt |
| Temperature Sensor Range | -40 ~ 125°C |
| Temperature Sensor Resolution | 0.1°C |
| GNSS Positioning Parameters | Longitude/Latitude (NB-IoT/Cat M Version Only) |
| GNSS Spatial Resolution | 0.000001 |
| Hardware Interfaces | 1 x LED Indicator (Internal), 1 x Power/Reset Button (Internal) |
| Power & Configuration Modes | NFC, Power Button (Internal), Downlink via Mobile App |
| Advanced Software Features | Cumulative Report (NB Version), Calibration, Threshold Alarm, Tilt & Distance Switch |
| Hardware Battery Setup | 2 x 9000 mAh ER26500 Li-SOCl2 Batteries |
| LoRaWAN Battery Lifespan | Standard Mode: >10 years (10 min interval, 25°C); Bin Mode: >10 years (20 min interval, 25°C); Parking Lot Mode: 5 years (12 triggers per day, 25°C) |
| NB-IoT/Cat M Battery Lifespan | TCP/UDP: Around 10 Years; MQTT/AWS: Around 5 Years (4 reports/day, 12 packages/report, 30-min collection interval, 25°C) |
| Operating Temperature Window | -30°C ~ 70°C |
| Relative Humidity Threshold | ≤ 95% (non-condensing) |
| Ingress Protection Class | IP67 |
| Housing Material & Color | ABS + PC (UL94 V0), Black gray |
| Physical Dimensions | 118 x 65 x 32.5 mm |
| Hardware Net Weight | 181.4g (Batteries included) |
| Installation Mounting | On the Flat Surfaces with Screws |
| Regulatory Approvals | CE, FCC |
| Environmental Compliance | RoHS |
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