What is the typical application for this sensor?

The MRR-1 (UM4000 series type) is ideal for liquid and solid level measurement in tanks and totes, bulk material management, and factory automation due to its chemical-resistant PBT/FRP housing.

What is the operating voltage range?

It supports a wide industrial range of 10–30 VDC, but also has a low voltage option of 3.6–5 VDC, making it suitable for battery-powered IoT applications.

How do the LED indicators work?

The sensor features Red and Yellow LEDs. In normal mode, the Yellow LED is On. During TEACH-IN, they flash to indicate object detection status or invalid calibration.

Is it suitable for harsh environments?

Yes, with an IP67 protection grade and housing made of high-quality materials (PBT/FRP), it offers high chemical resistance and durability in harsh conditions.

What is the output type?

The standard output configuration for this specific model configuration includes UART TTL digital output, with high resolution (0.11 mm).

Yujie MRR-1 Series Ultrasonic Sensor

The Yujie MRR-1 series is a compact threaded-mount ultrasonic sensor with a very small blind zone. Its threaded design allows quick installation, and the sensor supports battery power. It is particularly suitable for smart-city, smart-home or IoT devices for distance and level monitoring. The small form factor enables easy integration, enhancing system intelligence.

Features & Applications

Technical Specifications

Each product is organized for procurement review: core performance, fit and mounting, operating limits, integration notes, and RFQ-ready supply terms.

Application Fit

•Liquid and Solid Level Measurement (Tanks, Totes, Processing)
•Bulk Material Management
•Factory automation
•Position Detection
•Collision avoidance systems
•Smart parking systems

Features

✔Compact Threaded Design – Quick M18 installation in tight spaces
✔Battery Power Compatible – 3.6-5V DC for IoT and mobile applications
✔Very Small Blind Zone – Ideal for close-range distance measurement
✔TEACH-IN Functionality – Easy calibration and setup
✔Temperature Compensation – Maintains accuracy across temperature changes
✔High-Quality Housing – Chemical-resistant PBT/FRP materials

Applications

•Liquid and Solid Level Measurement (Tanks, Totes, Processing)
•Bulk Material Management
•Factory automation
•Position Detection
•Collision avoidance systems
•Smart parking systems

Need Engineering Support for MRR-1 Series?

Share sensing range, target type, output requirement, housing constraints, and environmental conditions for an RFQ-ready recommendation.

Request Specifications & Pricing for MRR-1 Series

Get detailed datasheets, OEM pricing, and lead time for the MRR-1 Series. Sensor evaluation MOQ typically starts from 10 pcs for standard models, depending on interface and housing choice. Available documents generally include outgoing functional QC data, electrical checks, and batch inspection records.

Highlights

•Housing made of high-quality stainless steel/PBT (Chemical Resistance)
•Battery powered compatible (3.6-5V DC option)
•TEACH-IN functionality
•Temperature compensation

Key Specifications

Performance

Sensing Distance	100 … 1000 mm (50 … 800 mm)
Adjustment Range	100 … 1000 mm (50 … 800 mm)
Unusable Area	0 … 100 mm (0 … 50 mm)
Transducer Frequency	About 200 kHz
Response Delay	About 125 ms
Resolution	0.11 mm at max. sensing range
Deviation of Characteristic Curve	±1% of full-scale value
Repeat Accuracy	±0.1% of full-scale value
Load Impedance	> 1k Ohm

Mechanical

Housing Material	PBT OR FRP
Transducer Material	Epoxy resin/hollow glass sphere; Polyurethane foam
Weight	48 g

Operating Limits

Operating Voltage	10 … 30 VDC, ripple 10%ss (3.6 - 5 VDC)
No-load Supply Current	≤ 20 mA
Temperature Influence	±1.5% of full-scale value
Ambient Temperature	-25 … 70 ℃
Storage Temperature	-40 … 85 ℃
Protection Grade	IP67

Integration

Product Name	4 Pin Connector Plastic PZT Ultrasonic Waterproof Sensor
Model Number	UM4000 Series (M18)
Brand Name	YUJIE
Standard Target Plate	100 mm × 100 mm
Indicators	LED yellow, LED red
Output Type	1 output UART TTL
Connection	Connector M12x1, 4 PIN
Wiring Colors	Brown, White, Blue, Black (Standard M12)

Procurement

MOQ / Sample Policy	Sensor evaluation MOQ typically starts from 10 pcs for standard models, depending on interface and housing choice.
Sample Lead Time	Standard sample lead time is usually 5-10 working days after output type and environment requirements are confirmed.
Production Lead Time	Typical production lead time is 3-5 weeks depending on quantity, interface changes, and housing customization.
Customization Scope	Common OEM options include output type, cable or connector interface, sensing window, housing material, and sealing level.
Available Documents & Reports	Available documents generally include outgoing functional QC data, electrical checks, and batch inspection records.