Key Features

A one-piece terminal made for manholes

Drop in and run, with no cabinet wiring. Ultra-low power, titanium connectors, edge computing, and a large battery are all built for dark, wet, corrosive underground networks left unattended.

Highly integrated design

RTU module, large battery bay, and mounting hardwarecombined in one body, drop in and run, no cabinet wiring.

Bluetooth app + platform management

Local Bluetooth app or cloud platformEnd-to-end setup and readings, so O&M does not open every cover.

Large built-in battery

Supports up to 1200 Wh rechargeable / 1368 Wh primary battery pack for long unattended supply.

Works across water levels

Low level, high level, evenLevel surcharge environments, the unit still collects and stores.

Titanium aviation connectors

Handles manholedamp, corrosive vapor attack, and stays stable in harsh sites.

Multiple edge algorithms

Cancel noise at the source, Keeps data complete and trends consistent, and the uplink is ready to use.

System Architecture

One link from manhole to cloud

Collect and process in the pit, then send on demand over several radios. Acquisition, compute, communications, and management form one loop — O&M is a phone in the hand.

STEP 01

Sense and collect

Level, velocity-flow, and water-quality data via 3 aviation ports access, collect in the pit.

STEP 02

Edge computing

Built-in edge algorithms on siteclean and calibrate data and cancel environmental noise.

STEP 03

Wireless backhaul

4G / NB / Cat1 Adaptive radio, ultra-low power, on-demand cloud reports.

STEP 04

Remote management

Bluetooth app or platformEnd-to-end setup, readings, and O&M, no need to open the cover.

Drainage platform · live backhaul Online

Level m0.86

Velocity m/s0.42

Instantaneous flow L/s38.6

Fill ratio %43

Battery charge %92

Signal strength %86

ZYGW-CTU · 4G / NB / Cat1 · MODBUS / MQTT

Live Telemetry

Live data backhaul,
Know the status before opening

The terminal measures level, velocity/flow, and water quality in the pit and reports on demand over 4G / NB / Cat.1. Level, fill ratio, battery, and signal appear on the platform and Bluetooth app. Alarms fire on exceedance, so crews do not open every cover.

CollectLevel / velocity-flow / water quality
Backhaul4G / NB / Cat.1 adaptive radio
ManageBluetooth app + platform O&M
RuntimeUltra-low power · 1368 Wh long-cycle supply

Specifications

ZYGW-CTU · specifications

One-piece body, ultra-low power, IP68. General specifications below for bid tables; battery and materials can be customized.

Power supply12VDC(±15%)

Waterproof ratingIP68

Ports1 antenna · 1 SIM · 1 charge port · 3 aviation connectors

Standby current≤ 10μA@12VDC

Operating temperature-20 ℃ ~ +60 ℃

Run current≤ 10 mA @ 12 VDC (excluding radio)

Operating current≤ 40 mA @ 12 VDC (excluding radio)

Communications4G / NB-IoT / Cat1

WeightAbout 5 kg with battery

Dimensions400 mm × Ø200 mm one-piece

EMI immunityMeets GB/T 17626

Materials304 stainless (316L optional) · salt-fog resistant

BatteryUp to 1200 Wh rechargeable / 1368 Wh primary pack

Applications

One terminal for the underground network

From manhole level to outfall flow, from storm/sewage separation to flood warning — drop it in and the point is live. One sensing network for smart water.

Drainage networkDrainage Network

Manhole levelManhole Level

Storm/sewage separation monitoringStorm-Sewage Split

Urban flood warningFlood Warning

Sewage networkSewer Network

River outfallRiver Outfall

Pump station · storage tankPump Station

Smart water platformSmart Water IoT

Get In Touch

For your network,
Build an online sensing net

Tell us the parameters, pit type, and radio conditions. We will return a terminal, battery, and sensor list — items can be adjusted to the site.

Call for selection →

Hotline139 2696 7285

Websitewww.hkinst.com

AddressNo. 40, Jinfeng West Road, High-tech Zone, Zhuhai, Guangdong