Smart manhole
Displacement sensor
The HKI 205 smart manhole displacement sensor is an in-house cover monitor. The system uses wireless IoT to track each cover — when something is wrong, an alarm goes to the data center and then to maintainers, who locate the site and respond quickly.
IoT sensing that watches every cover
3-axis gyroscope plus capacitive immersion chip for open, shift, tilt, and overflow. NB-IoT / tri-network radio, long-life lithium battery, EMI immunity, silt protection, instant alarms, and third-party platform support.
Multi-state monitoring · expandable
Can monitorOpen, shift, immersion and more, with optional functions.
NB-IoT · tri-network
Communication port NB-IoT, tri-network Stable wireless IoT access.
Lithium battery · long life
Powered byLithium thionyl chloride (3.6 V / 8000 mAh), long life, fewer battery swaps.
EMC · high immunity
The product hasEMI immunity, stable in harsh EMI.
Silt-resistant · pit-ready
Includes silt protection, built for silted underground pits.
Open integration · cloud ready
Strong compatibility, Upload to a third-party platform, connect to existing systems.
Cover events, reported at once
Local sound/light alarm plus wireless push: open, unauthorized, left open too long, tilt, overflow, and low voltage go to the platform at once so crews can act on the location.
Cover movement,
second-level alarm report
A high-accuracy 3-axis gyroscope tracks tilt and shift; a capacitive chip detects immersion and overflow. Open, tilt, overflow, or low-voltage events trigger a local alarm and a second-level NB-IoT / 4G push so crews can locate and act.
- Sense3-axis gyroscope · tilt / shift / vibration
- ImmersionCapacitive detection · overflow / submersion alarm
- ReportOffline mode 20–40 s response · wake on anomaly
- RuntimeLi-SOCl2 8000 mAh · sleep <20 µA
Instrument specifications
General specifications for the HKI 201 smart manhole displacement sensor. Use them in a bid table; contract documents govern the final configuration.
Which covers need watching?
Specify a smart-sensor batch
Tell us cover count, pit type, network, and platform needs. We will return a selection and install list — functions and thresholds can be extended.