IoT Nb 4G Intelligent Round and Square Ductile Manhole Cover for Smart City
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Product Highlights
- Multi-Mode Unlocking: Supports Key, Bluetooth, 4G/NB, and QR Code scanning for flexible access.
- IP68 Waterproof Design: Fully waterproof and corrosion-resistant, functioning normally even when submerged.
- Long Battery Life: Equipped with 38000mAh battery, offering up to 5 years of standby power.
- Smart Remote Management: Enables remote unlocking, permission management, and real-time cloud data upload.
- High Security Lock Core: SUS304 stainless steel core with 360-degree idle design prevents violent opening.
- Environmental Monitoring: Real-time monitoring of temperature, humidity, water immersion, and gas levels.
- Customization Service: Offers full customization for lock models and management software based on needs.
- Durable Material: Made of FRP and SUS304 stainless steel, passing 72-hour salt spray corrosion test.
Product Attributes
- Customization
- Available
- After-sales Service
- Video Support, Online Technical Support
- Warranty
- 1 Year
- Model NO.
- CRT-JG600N
- Material
- FRP+SUS304
- Shape
- Round
- Certification
- RoHS, ISO, CE
- Lock Core Material
- SUS304 Stainless Steel
- Lock Body Material
- FRP+SUS304
- Battery Capacity
- 38000mAh
- Unlocking Times
- More Than 300000 Times
- Protection Level
- IP68
- Signal Transmission
- 4G, Nb, Bluetooth
- Applications
- Tube Well+Pipe Wells+Power Grid+Manhole
- Unlocking
- Key, Bluetooth, 4G/Nb, Scan Qr Code
- Special Features
- Remote Unlock, Temporary Task Authorization
- Functions
- Access Control, Date Upload, Gas Sensing
- Industry Solutions
- Manhole Cover
- Advantages
- Remote Access Control, Collect Audit Trail
- Transport Package
- Carton
- Specification
- Dia 600/700/900mm
- Trademark
- CRAT
- Origin
- China
- Production Capacity
- 200000pieces/Year
- Package Size
- 65.00cm * 65.00cm * 18.00cm
- Package Gross Weight
- 20.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of IoT Nb 4G Intelligent Round and Square Ductile Manhole Cover for Smart City
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Product Description
Missing and damaged manhole cover ?
Unable to repair in a timely manner ?
Causing personal injury or death accidents.
Causing loss of life and property.
Complex environment,Diversified ownership,old and in disrepair roads ,
causing missing asset information for the tube well.
Electrical fire occurs in the pipe well,Unable to quickly locate accident points and handle them in a timely manner.
Underground cables are often worn and stolen without permission.
Unable to real-time understand the status of the well environment.
High operating and maintenance costs and so on, a series of problems.
In this context
Our company has successfully developed intelligent manhole covers using technologies such as the Internet of Things, cloud computing, and wireless sensing.

| Lock core material | SUS304 Stainless steel |
| Lock body material | FRP+SUS304 |
| Battery capacity | ≥38000mAh |
| Operating Voltage | 3.6VDC |
| Standby power consumption | ≤30uA |
| Operating power consumption | ≤100mA |
| Operating environment | Temperature(-40°C~80°C),Humidity(20%-98%RH) |
| Unlocking times | ≥300000 |
| Protection level | IP68 |
| Corrosion resistance | Passed the 72-hour neutral salt spray test |
| Signal transmission | 4G, NB, Bluetooth |
| Encoding digits Number | 128(No mutual opening rate) |
| Lock cylinder technology | 360°,Idle design to prevent violent opening,Storage Operations (Unlock ,Lock, Petrol ,etc.) Log |
| Encryption Technology | Digital encoding technology & encrypted communication technology ;Eliminate echnology activation |



Create Manhole cover lock-This product digitally archives the identity of the manhole cover.
Realized centralized management of manhole cover platform, and achieved intelligent operation and maintenance through digital 5G IoT communication technology.
Significantly reduces operational and maintenance costs.Improved the work efficiency
Effectively ensuring the safety of underground pipeline network resources.
Clear management of personnel permissions.
Remote unlocking through permission management.
Bluetooth unlocking, emergency unlocking, and other unlocking methods.Ensure that the smart manhole cover can be opened smoothly under any circumstances.
The presentation of combining list and the map makes every lock clear visible.
We invest over 3% of our annual sales revenue in R&D with numerous patent achievements .
Real time upload of switch records to the cloud.
Implement trace-based management, monitor the opening and closing status of the outer cover in real-time, and ensure road safety.
Real time monitoring of temperature and humidity, water immersion, gas and other environmental conditions inside the well.
And through self-developed algorithms, the operation status of cables in the well can be effectively determined.
The intelligent manhole cover has undergone authoritative testing by the Ministry of Public Security.Soaking in water can also be used normally.
The working temperature range is -40 ºC~+80 ºC, without fear of severe cold and heat.
The intelligent manhole cover is made of high-strength and corrosion-resistant materials, meeting the needs of harsh environments.
Ultra long standby, with a battery life of up to 5 years.
CRAT Smart Manhole cover lock widely used in Municipal industry, Communication fiber optic cable well, Power cable well, Gas well.
And has been used in major cities in China.
State Grid Beijing Power Supply Company
Pilot application in Fengxian Power Supply Company
MAIN PRODUCTS: Passive smart lock,Electronic Wireless Intelligent lock,Communication base- station smart lock,Passive padlock,Bluetooth padlock,NB Intelligent Optical box lock,Intelligent manhole cover lock,Public passage Smart lock and the full range of smart locks.
We provide free standalone version lock software ,also web-based lock software which is paid.
And,we can customize the lock to your requires .
Please feel free to contect us and tell us your demand .
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2441295". Items marked "" are certified.
Company Profile
Xuzhou Create Electronic Technology Co., Ltd (CRAT) was established in 2016, Located in Building 1#-2, Liandong U Valley, Leye Road, Jiawang District, Xuzhou City, Jiangsu Province, China. And occupies an area of more than 4, 600 square meters.
CRAT is a manufacturer with a professional R&D team, specializes in lock management systems with Automatic recognition, Encryption, and LOT technology. CRAT intelligent lock systems are widely used in railway, communications, power, banks, grains, petrochemicals, smart cities, logistics and warehousing, smart heating, water affairs, exhibitions, property, etc. And enjoys a high reputation for Integrity. At present, 1000000+products exported to many places of the world.
CRAT has over 50 employees, and about 15 people of them are R&D Engineers. We are identified as National High-tech Company and we already have 76 patents, and will have more in the future.
We have obtained ISO 9001: 2015 international certification in 2019, and Environmental management system certification and occupational health and safety management system certification.
Main products: Passive smart lock, Electronic Wireless Intelligent lock, Communication base- station Cabinet lock, Passive padlock, Bluetooth padlock, NB Intelligent Optical box lock, Intelligent manhole cover lock, Public passage Smart lock and the full range of smart locks.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Building 1#-2, Liandong U Valley, Leye Road, Jiawang District, Xuzhou, Jiangsu, China
-
Plant Area
- 1549.02 square meters
-
Number of Employees
- 65
-
Registered Capital
- 10,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 1 PC
-
Supply Chain Partners
- 310
Our Production Capability & Technical Expertise
-
Main Products
- Passive Smart Lock, Electronic Wireless Intelligent Lock, Base- Station Cabinet Lock
-
Production Lines
- 1
-
Production Machines
- Assembling Line
-
QA/QC inspectors
- 7 people
-
Inspection Type for Finished Products
- Random inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 1 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2016-09-03
-
Export Year
- 8 Years
-
Main Markets
- North America, Domestic
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 3
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What unlocking methods are supported?
- The lock supports multiple unlocking methods including Key, Bluetooth, 4G/NB, and Scan QR Code.
- Is the manhole cover waterproof?
- Yes, it has an IP68 protection level and can function normally even when soaked in water.
- How long does the battery last?
- With a battery capacity of 38000mAh, the standby time can reach up to 5 years.
- Can the lock be customized?
- Yes, we provide customized services for both the lock model and the management software according to your needs.
- What is the warranty period?
- We provide a 1-year warranty for this product.
- What materials are used for the lock?
- The lock core is made of SUS304 Stainless Steel, and the lock body is made of FRP+SUS304.
- What features does the software provide?
- The software offers remote unlocking, permission management, real-time status monitoring, and audit trail uploads.
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