Kantangren OXYTAI unifies power distribution · IoT · cloud platform into one coordinated system. One 4G controller, one fluorescence DO sensor, one subscription-based cloud service — so that fish, shrimp and crab ponds leave behind four pain points: blackout hypoxia, high electricity bills, 3 a.m. pond patrols and sensor drift.
A single power cut, one night of neglect, one stretch of sensor drift — any of them can wipe out an entire pond. OXYTAI deals with every one of these worries, one by one.
Summer thunderstorms, typhoon load-shedding or a burnt-out transformer stop the aerators. Between 3 and 5 a.m. dissolved oxygen falls off a cliff, and the whole pond can be lost in hours.
Aerators run all day whether oxygen is needed or not, eating 30~50% of the profit. Most farmers cannot even say for sure when they should be switched off.
However experienced you are, you still get up at night to patrol the pond, look for gasping fish and decide whether to start the aerators. Labour costs money, it exhausts you, and judgement slips.
Polarographic probes need membrane replacement and cleaning every 1~3 months, and most farms have no technician. Once the reading drifts the data lies — and by the time the alarm rings it is too late.
We do not just sell a controller. We turn power, sensing, decision-making, actuation and maintenance into one deployable aquaculture operating system.
From utility grid, battery storage and genset down to a hardware bypass lever: if one layer fails, the next one takes over automatically.
In accordance with GB/T 3805 / IEC 61140 SELV — essentially harmless to people and to fish.
4G, Wi-Fi and Bluetooth back each other up; edge decisions + cloud rules + the WeChat Mini Program work as one.
OXYTAI = power distribution + IoT + cloud: a three-tier, coordinated aquaculture operating system. Every tier can run standalone; together they form a thinking "pond brain".
cloud SaaS · O&M · subscription
4G controller · sensors · edge loop
DC 48V microgrid · 380V AC coupling
New ponds adopt a native DC 48V microgrid (Route A); existing 380V sites get PV-storage-genset AC coupling (Route B). The two routes are complementary — never conflicting, never mixed up.
new ponds / DC-native architecture / the optimal power topology
existing 380V ponds / no rewiring / upgrade in place
Controllers, sensors, enclosures, VFDs, energy storage and OXYTAI water-quality probes — from pond to cloud, every item backed by engineering, not slides.
In-house 4G IoT gateway board: 4G IoT SIM + dual RS485 bus + edge DO loop — one device that pulls sensors, aerators and VFDs onto a single data bus.
Y504-A fluorescence-quenching DO probe: no electrolyte, no frequent recalibration, no membrane, IP68 titanium-alloy housing, RS485 Modbus straight into the 4G controller — the drift problem solved at its root.
Three-phase U/V/W × 4 channels = 12 high-current relay outputs, universal for 380V three-phase and 220V single-phase ponds; three RS485 ports plus a 12V bus cascade with the 4G gateway, scalable to 6.7 ha+ clusters.
Wall-mounted waterproof VFD driven directly by the 4G controller over RS485 Modbus; DO thresholds map to four automatic speed steps — a further 20~40% energy saving on top of direct-on-line start.
5.12 kWh × 8 = 40.96 kWh of rack modules, 51.2V DC compatible with a 48V bus, fits standard 19-inch cabinets; once connected to the Kantangren 4G controller it charges at off-peak tariff and discharges at peak.
30.72 kWh × 2 = 61.44 kWh modular lithium storage cabinet, 51.2V DC plug-and-expand straight onto the bus; IP55 rated, >6,000 cycles, BMS + EMS coordinated through the Kantangren 4G controller.
Split-body freshwater probe measuring pH / temperature / TDS / conductivity in a single unit; links to the Kantangren 4G controller over Wi-Fi 2.4 GHz via Modbus for remote reading and out-of-limit alarms; with float collar or lanyard it can be dropped straight into the pond.
Adds ORP / specific gravity / salinity on top of the four parameters; works in seawater, brackish and fresh water — purpose-built for shrimp ponds; TDS and conductivity auto-range, with salinity covered across the full 0.01%~25.00% span.
Scan the code and go — WeChat login, no registration. Multi-pond control · live dashboard · one-tap remote switching · alarm push notifications.
A single management platform for distributors, integrators and enterprise accounts: full device lifecycle + customer management + financial reconciliation.
Millions of devices, millisecond-resolution time series, built on the company's existing IoT middleware platform — negligible marginal cost.
EMS energy cockpit, web farm overview and the WeChat Mini Program — three entry points covering big-screen O&M, desktop management and mobile operation.
Battery SOC, PV power, grid / genset status and load interlocks all visible on one screen; automatic peak-valley arbitrage decisions, with the full energy flow of the farm on a PC dashboard.
Centralised multi-pond management: live DO / water temperature / pH / ammonia trends, device online status, remote aerator control and alarm tickets — all in one place.
Farmers manage every pond centrally, watch live DO, start aeration with one tap and receive alarms — no registration, no learning curve. Everything about the pond handled on the phone.
Every number here has an engineering basis — not marketing copy.
From a 0.3 ha starter pond to a 6.7 ha+ enterprise operation, three packages cover 80% of cases. CNY figures converted at approx. 7.15 CNY/USD; the formal quote follows an on-site survey.
We do not sell "installed then ignored" hardware. From survey to acceptance, all six stages are run against standard manuals — each step has a checklist, a signature and full traceability.
Engineers come to the pond with the On-Site Survey Checklist and confirm conditions item by item.
Route is chosen by pond scale and budget: native DC 48V or 380V retrofit.
Enclosures are assembled on DIN rail and power-tested in the factory, arriving ready to install.
Crews work to the Installation Manual — they do not need to read schematics.
Ten steps per the On-Site Commissioning SOP: insulation → earthing → power-up → comms → interlock.
Checked item by item against the Acceptance Standard & Checklist, then signed off by both parties.
The devices report their own faults: the cloud platform monitors 24/7 and most issues are resolved remotely, without waiting for an engineer to travel out. Anything that does need a visit follows P0~P3 graded response targets.
one of them always answers, even at midnight
12 remote capabilities — most faults fixed without leaving the village
wear parts are listed at fixed prices — replace a part, not the whole unit
Pond-loss risk is always handled at the top grade — keeping the fish alive comes before everything.
| Grade | Definition | First response | Resolution time | Typical case |
|---|---|---|---|---|
| P0 Critical | all aerators out of control, pond-loss risk present | 15 minutes | 4 hours | device offline + critically low DO |
| P1 Severe | some circuits out of control, sensor failure | 30 minutes | 24 hours | one relay channel not switching |
| P2 Normal | abnormal data but aeration unaffected | 2 hours | 48 hours | frequent 4G dropouts, DO jumps |
| P3 Minor | usage questions, feature suggestions | 4 hours | 7 days | how to set timer mode |
Hardware is the entry point; subscription is the retention. Start from the basic tier and upgrade with farm size — long-term retention has a reason behind it.
A hardware ladder from single pond to 6.7 ha+ clusters; configuration differences are public and transparent, upgradeable on demand.
| Tier | Hardware | Suitable for |
|---|---|---|
| Basic | relay mode | single pond under 0.3 ha |
| VFD | VFD closed-loop speed control | standard farms of 0.7-2 ha |
| Flagship | DC 48V + storage + microgrid | over 2 ha |
Annual subscription is priced in steps by service depth; support, O&M, data and value-added services are selectable and configurable.
| Level | Service | Value |
|---|---|---|
| Data | live trends · history replay | basic monitoring |
| Alerts | graded alarms · voice-call notification | risk backstop |
| O&M | OTA · remote commissioning · tickets | long equipment life |
| Value-added | water quality reports · feeding advice · API | better farm management |
Start from the basic configuration and layer on capability as the customer grows. Deployed hardware is 100% compatible with the next stage of firmware.
4G controller + fluorescence DO sensor + direct-on-line relay start: the first step of "DO visibly measured + aerators switched automatically".
Add a VFD; DO thresholds drive four interlocked speed steps, saving 30~50% energy.
New ponds adopt the native DC 48V microgrid: intrinsic safety plus greatly improved lightning withstand.
Existing 380V retrofit ponds add a PV-storage-genset microgrid; the EMS four-state machine delivers zero single point of failure.
Kantangren OXYTAI is the smart aquaculture operating system brand launched by Guangzhou Hotekey Electronics for the aquaculture industry. Coordinating three tiers — power distribution + IoT + cloud platform — it turns what farmers care about most, "are the fish alive, is the power bill low, can I sleep at night", into measurable, deliverable and subscribable engineering solutions.
The brand promise "We watch your pond, so you can sleep" frees farmers from 3 a.m. patrols, the anxiety of stormy nights and the monthly power bill. Every solution has an engineering basis, every number has a source, and every function can be verified on its own.
Power cuts, power bills, night patrols and sensor upkeep - four practical questions, answered by the architecture itself.
When summer thunderstorms, typhoon load-shedding or a burnt-out transformer stop the aerators, dissolved oxygen falls off a cliff between 3 and 5 a.m. and a whole pond can be lost in hours. The Kantangren DC 48V storage architecture switches over automatically during an outage, and the 4G controller raises a real-time alarm to prevent night-time hypoxia.
Conventional aerators run all day regardless of dissolved oxygen, consuming 30~50% of the profit. Kantangren measures DO in real time with a fluorescence sensor, drives aeration on demand through a VFD closed loop, and the waterproof VFD saves a further 20~40% on top of direct-on-line starting.
No. The system monitors dissolved oxygen, temperature and other parameters 24/7, switches aeration on automatically when limits are exceeded, and sends an alarm by voice call and WeChat. Live readings are available in the WeChat Mini Program, turning night patrols into automatic system watch.
Conventional polarographic probes need membrane replacement and cleaning every 1~3 months, and once the reading drifts the data is unreliable. Kantangren uses a fluorescence DO sensor with no membrane and no frequent recalibration, paired with an automatic wiper, in an IP68 titanium-alloy housing, which cuts maintenance frequency dramatically.
Tell us your farm scale and pond setup; an engineer will contact you within one business day with an on-site survey and a draft proposal.
Distributors, farm owners, integrators and enterprise accounts are all welcome. Every proposal includes an on-site survey and a 7-day free trial.
