MacRay-WU4 Wi-Fi Ultrasonic Level Sensor Datasheet
Product Overview
MacRay-WU4 is a rugged Wi‑Fi–based ultrasonic level sensor designed for short‑range, high‑precision level monitoring (0–4 meters) of liquids and solids in industrial, commercial, and utility environments where reliable IP connectivity is available. Using advanced ultrasonic time‑of‑flight measurement and intelligent echo processing, it delivers accurate and repeatable level data even in challenging conditions such as turbulence, foam, and confined spaces.
Engineered with an IP67‑rated sensor head, corrosion‑resistant housing, and industrial‑grade electronics, MacRay-WU4 operates reliably in moisture‑rich, dusty, and chemically exposed environments. It is well suited for tanks, pits, manholes, sumps, reservoirs, wastewater chambers, and flood‑prone installations located within Wi‑Fi–covered premises.
The device transmits level data securely over standard Wi‑Fi networks (2.4 GHz / 5 GHz) directly to on‑premise servers, dashboards, SCADA systems, or cloud platforms using industry‑standard protocols such as MQTT, HTTP, and HTTPS, without the need for gateways or long‑range wireless infrastructure.
MacRay-WU4 supports periodic, event‑based, and threshold‑based reporting, along with local BLE provisioning and diagnostics via the Macnman Maya mobile application. Available in battery‑operated and externally powered variants, it enables flexible deployment for both fixed industrial installations and locations where wired connectivity is limited, delivering low‑latency, Wi‑Fi‑based level monitoring for modern Industrial IoT applications.
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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
Industrial Tank Level Monitoring Accurate level measurement for water, chemicals, oils, and process liquids in industrial tanks located within Wi‑Fi‑enabled facilities.
Sumps, Pits & Utility Chambers Continuous monitoring of liquid levels in sumps, lift pits, pump rooms, and underground utility chambers to prevent overflow and equipment damage.
Wastewater & Effluent Treatment Plants Reliable level monitoring for equalization tanks, aeration basins, sludge pits, and treatment chambers within plant premises.
Water Storage & Distribution Systems Level tracking in overhead tanks, underground reservoirs, and buffer tanks for industrial and commercial water management.
Flood & Basement Water Monitoring Early detection of rising water levels in basements, parking areas, and flood‑prone zones inside buildings and campuses.
Industrial Process Automation Integrates with SCADA and local dashboards over Wi‑Fi for real‑time level data used in automated control and safety systems.
Commercial Buildings & Campuses Level monitoring for water tanks, rainwater harvesting systems, and drainage pits in offices, hospitals, malls, and campuses.
Smart Factories & On‑Premise IoT Enables low‑latency level monitoring within factories and plants using direct Wi‑Fi connectivity and IP‑based protocols.
Technical Specifications
General
Specifications
Part Order Number
MacRay-WU4
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
Communication
Wi‑Fi Standards
IEEE 802.11 b/g/n/ac
Frequency Bands
2.4 GHz & 5 GHz (Dual‑Band)
Operating Modes
Station Mode (Client)
Access Point Mode (Configuration)
Network Protocols
MQTT, HTTP, HTTPS
Security
WPA2‑PSK / WPA3
TLS / SSL Encrypted Communication
IP Configuration
DHCP / Static IP
Typical Indoor Range
Up to 100 m (environment dependent)
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 network
Single Red Blink
A confirmed parameter of MacSync 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
Supported
Cloud & Platforms
Deployment Models
On-Premise Servers
Private Cloud Deployments
Public Cloud Platforms
IoT Cloud Platforms
AWS IoT Core
Microsoft Azure IoT Hub
Google Cloud (via MQTT / HTTPS)
Custom IoT Platforms
Integration Methods
MQTT Brokers
REST / HTTPS APIs
Webhooks
Enterprise Systems
SCADA Systems
BMS / IBMS Platforms
Data Lakes & Analytics Engines
Physical
Characteristics
Power Supply
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 White
Weight
~110g
Mounting Options
Pole Mounting / Wall Mounting
Electrical
Characteristics
Input Voltage Range
9-36 V DC (External Supply)
Power Consumption
~100 µA in sleep mode
~150 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
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-WU4 Variants
| Variant Name | Power Source | Battery Capacity | Solar Support | External Flash | Ideal For |
|---|---|---|---|---|---|
| MacRay-WU4-PO | 12–24 V (Power) | ✖️ | ✖️ | ✔️ | Industrial or commercial sites with stable power supply |
| MacRay-WU4-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.
MacRay-WU4 Dimensions
Frequently Asked Questions
What is the MacRay-WU4 used for?
MacRay-WU4 is a rugged Wi-Fi ultrasonic level sensor for short-range, high-precision (0-4 m) non-contact level monitoring of liquids and solids. Typical applications include Industrial Tank Level Monitoring, Sumps, Pits & Utility Chambers, Wastewater & Effluent Treatment Plants, Water Storage & Distribution Systems, Flood & Basement Water Monitoring and Industrial Process Automation.
What does the MacRay-WU4 measure, and how accurately?
Measurement specifications of the MacRay-WU4:
- Ultrasonic Level: range 3 – 450 cm, resolution 0.1 cm.
How does the MacRay-WU4 connect and send data over Wi-Fi?
The MacRay-WU4 connects over IEEE 802.11 b/g/n/ac Wi-Fi on 2.4 GHz & 5 GHz (Dual‑Band). Security: WPA2‑PSK / WPA3, TLS / SSL Encrypted Communication. IP configuration: DHCP / Static IP. It sends data using MQTT, HTTP, HTTPS. Typical indoor range is up to 100 m (environment dependent).
How is the MacRay-WU4 powered?
The MacRay-WU4 is powered from 9-36 V DC (External Supply).
What is the IP rating and operating temperature of the MacRay-WU4?
The MacRay-WU4 has an ingress protection rating of IP65 standard (IP67 optional variant) and an operating temperature range of -40°C to +80°C. Operating humidity: 0% to 100% RH (non-condensing). Mounting options: Pole Mounting / Wall Mounting.
How is the MacRay-WU4 configured?
The MacRay-WU4 is configured with the Macnman Maya Android app. Supported uplink modes: Time Based / Threshold Based / Sampling Based. It can also be configured remotely with JSON data sent from the server.
Which cloud platforms does the MacRay-WU4 work with?
The MacRay-WU4 can send data to platforms including AWS IoT Core, Microsoft Azure IoT Hub, Google Cloud (via MQTT / HTTPS), Custom IoT Platforms. Deployment models: On-Premise Servers, Private Cloud Deployments, Public Cloud Platforms. Integration methods: MQTT Brokers, REST / HTTPS APIs, Webhooks.