MacRay-LU4 Datasheet
Product Overview
MacRay-LU4 is a rugged LoRaWAN® ultrasonic level sensor designed for short-range precision (0–4 meters) monitoring of liquids and solids in harsh outdoor and industrial environments. With advanced time-of-flight ultrasonic measurement and intelligent echo processing technology, it ensures high-accuracy level detection for tanks, pits, manholes, sumps, reservoirs, waste processing chambers, and flood monitoring systems.
Engineered with IP67 sensor protection, corrosion-resistant housing, and advanced interference filtering, the MacRay-LU4 operates reliably in moisture-rich, chemically aggressive, and dusty environments where traditional level sensors fail. It supports LoRaWAN® Class A, long-range coverage, and offers multi-year battery performance, making it ideal for remote and unmanned sites.
The device integrates AES-256 encrypted LoRaWAN® communication, over-the-air configuration via Maya App (BLE), and supports intelligent uplink modes including periodic, event-driven, and threshold-based triggers — enabling energy-efficient deployments at scale.
Whether supporting smart water utilities, sewer & drainage systems, liquid storage tanks, waste tracking, or environmental flood alerts, MacRay-LU4 converts real-world level conditions into instant data, enabling proactive maintenance, reduced operational costs, and smarter city infrastructure.
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Key Features
Short‑Range Precision Sensing Optimized ultrasonic measurement for 0–4 meters liquid and solid level monitoring.
Advanced Echo Processing Intelligent filtering eliminates false readings from foam, turbulence, and obstructions.
Battery‑Powered LoRaWAN® Multi‑year autonomous operation with ultra‑low‑power wireless communication.
IP67 Rugged Design Durable and corrosion‑resistant enclosure built for harsh outdoor and underground environments.
Smart Uplink Strategies Periodic, event‑based & threshold alerts optimize power consumption and network traffic.
BLE Configuration via Maya App Quick setup, OTA parameter adjustment & diagnostics using a smartphone.
Wide Industrial Use Designed for manholes, sewer drains, tanks, pits, reservoirs & flood monitoring.
Secure & Long‑Range Communication AES‑128 encrypted LoRaWAN® connectivity with strong penetration in remote areas.
Flexible Deployment Options Supports pole, wall, and custom mount installation for easy field deployment.
Compatible with All LoRaWAN® Networks Works seamlessly with private/public network servers and cloud platforms.
Suited Applications
Smart Water Utilities Continuous level monitoring for underground water tanks, overhead tanks, reservoirs, and sumps.
Manhole & Sewer Level Monitoring Detect overflow risks, blockages, and sewer flooding in drainage networks.
Flood & Stormwater Monitoring Real-time alerts for rising levels in rivers, canals, storm drains, and flood-prone zones.
Industrial Wastewater Management Accurate level detection in effluent treatment plants, sludge pits, and chemical tanks.
Mining & Quarry Operations Level tracking in slurry pits, water sumps, and tailing dams for safety assurance.
Smart City Infrastructure Remote monitoring of drainage networks to prevent urban flooding and road closures.
Oil & Fuel Storage Tanks Level measurement for diesel storage, fuel stations, and industrial oil chambers.
Remote & Unmanned Locations Low-maintenance, long-range LoRaWAN® monitoring where wired installation is impractical.
Environmental Risk Monitoring Early warning for spill detection, groundwater rise, or hazardous waste overflow.
Technical Specification
General
Specifications
Part Order Number
MacRay-LU4
Product Brand
Macnman Technologies Pvt Ltd
Ultrasonic
Level Measurement
Ranging Range
3 – 450 cm
Blind Zone Distance
3 cm
Response Time (Sensor)
100 ms
Resolution
0.1 cm
Center Frequency
40 kHz ± 1 kHz
Sensing Angle
60°
Protection Rating (Sensor)
IP67
Wireless
Transmission
Wireless Protocols
LoRaWAN® (v1.0.4)
Macnman MacTalk Protocol
Antenna
Internal high-efficiency antenna
Supported Bands
IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4
Tx Power
23 dBm @ 868 MHz / 20 dBm @ 915 MHz / 19 dBm @ 470 MHz
Sensitivity
-137 dBm @ 300 bps
Activation
OTAA
LoRaWAN® Class
Class A (default)
Configurable to Class C via Maya
LED
Status
LED Type
1 Internal Multi-Color LED
Solid Blue
Device is connected with Maya App
Flashing Blue
OTA (Over-the-Air) update in progress
Slow Blinking Green
Attempting to connect to the LoRaWAN® network
Single Red Blink
A confirmed parameter of MacRay is being modified
Device
Configuration
Configuration
Via Macnman Maya Android App
Uplink Modes
Time Based / Threshold Based / Sampling Based
Stored Records*
30,000 Records
Remote Configuration
JSON Format Data - from server
Battery
Performance
Battery Type
Li-SOCl₂ Cell (12Ah) Industrial grade
Power Consumption
~100 µA in sleep mode
~50 mA during transmission
Battery Life
Up to 2 years (10 Mins Uplink Interval)
Supported
LNS
Supports Major LNS
Private LNS
Chirpstack
The Things Networks
MQTT
Orbiwise
LORIOT
Direct PLC On-Prim Installations
Physical
Characteristics
Power Supply (Optional)
9-36 V DC
Operating Temperature
-40°C to +80°C
Humidity Range
0% to 100% RH (non-condensing)
Ingress Protection
IP65 standard (IP67 optional variant)
Housing Material
Glass field Nylon
Color
Matte Black
Weight
~110g
Mounting Options
Pole Mounting / Wall Mounting
Electrical
Characteristics
Input Voltage Range (Optional Varient)
9-36 V DC (External Supply)
Power Consumption
~100 µA in sleep mode
~50 mA during transmission
Input Impedance
>10 MΩ for voltage inputs
Communication
Options
BLE Connectivity
For local configuration and diagnostics via Maya App
Cloud Protocols
MQTT / HTTPS / TCP IP (Gateway Dependent )
Serial Interface
RS485 Modbus RTU support (optional)
Certifications &
Compliance
WPC
Compliant
RoHS
Conforms to RoHS directive
Security &
Encryption
Data Encryption
AES-256 end-to-end encryption
Authentication
OTAA activation modes
Firmware Protection
Secure boot and signed OTA updates
MacRay-LU4 Variants
| Variant Name | Power Source | Battery Capacity | Solar Support | External Flash | Ideal For |
|---|---|---|---|---|---|
| MacRay-LU4-PO | 12–24 V (Power) | ✖️ | ✖️ | ✔️ | Industrial or commercial sites with stable power supply |
| MacRay-LU4-BO | Battery | 12 Ah | ✖️ | ✔️ | Remote or portable deployments with low power |
What's in the box ?
Make sure box contains following items before installations
Accessories must be purchased separately & may not be included in the box.
Product Dimensions
