TK-4G-GW 4G Gateway & TK-R12 12-Channel Control Board

The brain and the hands of the system: the 4G gateway decides, the 12-channel control board executes. Live DO data comes in over RS485, the gateway acts on the spot — aerators on when oxygen drops, down when it recovers — and this local loop does not depend on the network, so your ponds stay protected offline.

TK-4G-GW 4G Aquaculture Gateway

A self-developed 4G IoT gateway board that pulls sensors, aerators and VFDs onto one data bus:

• 4G SIM + tri-chip architecture: data up over MQTT; remote viewing, push alarms, cloud commands;
• Dual RS485: one bus dedicated to DO probes, one driving the waterproof VFD directly over Modbus RTU — no extra protocol converter;
• Edge DO closed loop: threshold logic runs locally; 4G is the reporting channel, never the control dependency;
• 12V output: powers probes and peripherals for cleaner pond-side wiring;
• USB debug port + OTA: capabilities evolve without replacing hardware.

TK-R12-SC4S-BG 12-Channel Control Board

The execution stage for larger farms:

• 3-phase U/V/W × 4 = 12 high-current relay channels: staged startup of multiple aerators per pond;
• 380V three-phase and 220V single-phase in one system; main-control supply derives two phases from 380V — built for farms without a neutral wire;
• Up to 3kW per channel (220V single-phase), covering 0.75–3kW aerators; 3.5/7.5kW upgrade paths available;
• 3 × RS485 + 12V bus cascades with the gateway; boards stack for expansion;
• IP55 enclosure ready with four-stage lightning/surge protection and residual-current protection.

How they work together

1. DO probes stream data to the gateway over RS485 (second-level polling);
2. The gateway compares against per-pond thresholds: below the ON line → close the channel / raise VFD frequency; above the OFF line → stop / lower;
3. Multiple aerators start in stages — half on, watch the rise, then add the next group — avoiding inrush spikes and wasted power;
4. Everything mirrors to the cloud: live curves, graded alarms (push / SMS / voice call), and remote diagnostics for operations.

FAQ

Can I switch aerators on from my phone?

Yes — per-channel ON/OFF, one-key staggered full-start and VFD speed control via the cloud. Manual commands are validated at the gateway, and local safety logic always keeps priority.

How many ponds per account?

Multi-pond management is native: one account, many gateways, per-pond thresholds, fleet dashboard and grouped alarms — see multi-pond management.

What about lightning and leakage?

Four-stage SPD surge protection, equipotential grounding and two-stage RCD protection with trip alarms — details in power distribution protection.

Can we expand later?

Add gateways horizontally, stack boards vertically — existing equipment stays. Firmware evolves over OTA.

Related reading

• How TAYKEE works (four-layer architecture)
• 4G remote control: offline fallback & deployment
• Multi-aerator staged linkage
• Remote diagnostics capability