4G Lorawan Nb-IoT Compact Mini Wireless Battery 3 Years IP68 Remote Manhole Cover Tilt Alarm Water Overflow Monitoring Alarm Device

• Customization: Available
• After-sales Service: Yes
• Warranty: 3 Years
• Model NO.: SJ500-L
• Function 1: Manhole Cover Status Detector
• Funciton 2: Manhole Cover Safe Warning
• Function 3: Manhole Cover Move Monitor
• Function 4: Manhole Cover Monitoring
• Transport Package: Carton Box
• Specification: 15*10*8
• Origin: China
• HS Code: 9032890000
• Production Capacity: 1000PCS/Month
• Package Size: 15.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 1.500kg
• Lead Time: 7 days (1 - 10 Pieces) ; To be negotiated ( > 10 Pieces)

Product Description

Manhole Cover Status Tilt Alarm Monitoring 

The device is a comprehensive solution designed to monitor the status of manhole covers and measure water levels within manholes using advanced sensor technology. The system utilizes battery-operated sensors installed on manhole covers to detect their open or closed status and employs mmWave distance measurement sensors to accurately measure water levels within the manholes.

Features

1. Supports water immersion alarm;
2. Ultra-Low power consumption & long battery life;
3. IP68-rated protection;
4. LoRaWAN,NB-IoT or 4G network communication;
5. High sensitivity & rapid response to abnormal movements;
6. Remote configuration;
7. Monitors abnormal actions;
8. Alarm/disarm functionality;
9. Manual/automatic zero calibration;

Functions

1. Real-time Monitoring & Alerts
The device provides real-time response to changes in manhole cover status (e.g., overflow, tilt, opening) and transmits alarm signals. It simultaneously monitors battery voltage and triggers low-voltage alerts.
2. Scheduled Status Reporting
The device automatically sends daily status reports (including battery voltage and cover status) to ensure operational visibility even in the absence of alarm events.
3. Alarm Event Filtering
Equipped with a multi-level alarm filtering system, the device minimizes false alarms caused by vehicle vibrations or transient movements, effectively reducing energy consumption.
4. Remote Parameter Configuration
The manhole cover monitor allows remote parameter adjustments, simplifying operation and maintenance.

Installation

1. Determine installation position
Mark the screw hole locations on the manhole cover for securing the manhole cover status monitor.

2. Surface preparation

Use a manual grinder to remove rust from the marked area,Smooth the surface with sandpaper to ensure a secure fit between the device and the manhole cover.

3. Apply Thread-Locking Adhesive

Spray thread-locking adhesive onto the threads of the screws at the installation points. This prevents loosening caused by prolonged vibration of the manhole cover.

Technical Specification

(Custom configurations available upon request.)

Model	SJ500-L	Transmission interval	300-65535s
Measurement range	0°~180°	Explosion-proof grade	Ex ib IIB T4 Gb
Measurement accurate	±2°	Protection grade	IP68
Battery lifespan	≥3 years	Data storage	128Mbit
Battery capacity	8AH	Data docking	SDK data docking
Communication mode	4G,NB-IOT,LoRaWAN	Working temperature	-40~85℃
Communication protocol	MQTT	Storage temperature	-20~60℃

Application

Manhole cover status monitoring

Company Profile

Application

Certifications

Packaging & Shipping

FAQ

Q: What is the lead time for orders?
A: Our standard models are dispatched within a swift 15–30 days, while our customized units, tailored to your specific needs, require a careful crafting process of 30–45 days to ensure perfection.
 
Q: Do you provide after-sales service overseas?
A: Certainly! We have strategically partnered with service centers in key regions to offer you unparalleled after-sales support, ensuring your satisfaction no matter where you are.
 
Q: Can I request a customized order?
A: Absolutely! We pride ourselves on offering comprehensive OEM and ODM services to bring your unique vision to life.
 
Q: What documents do you provide for export?
A: We provide a comprehensive suite of export documents, including the Commercial Invoice, Packing List, Bill of Lading, COC, and more, ensuring a smooth and hassle-free export process.
 
Q: How do I place an order?
A: To place an order, simply get in touch with us via email or phone to receive a personalized quote. Once you're satisfied, confirm your order with a Purchase Order (PO) and we'll take care of the rest.