Our Technology

The Science of
AC Intelligence

We research, decode, and implement the communication protocols that power modern Inverter Air Conditioning systems — from signal analysis to production-ready devices.

Our Process

How We Build AC Intelligence

Every Expert Lab device starts with rigorous protocol research. We capture signals, analyze patterns, reverse-engineer communication stacks, and validate everything under real-world conditions.

01
Signal Capture
We tap into the AC communication bus using isolated probes to capture raw signals safely.
02
Protocol Analysis
Captured signals are analyzed using logic analyzers and custom decoding software.
03
Reverse Engineering
We document every command byte, parameter, and response pattern for complete protocol maps.
04
Device Development
Verified protocol knowledge is embedded into production hardware with safety isolation.
Protocols We Research

Communication Standards
We Master

⚡
S21 / F-Series Protocol
UART Serial
Daikin AC communication protocol used in split and multi-split systems for real-time parameter exchange.
🔄
KFR / QD Protocol
Proprietary Serial
Midea/Carrier proprietary protocol covering temperature, compressor state, fault codes, and fan speed.
📡
HVAC RS485 Modbus
RS485 / Modbus RTU
Industrial-grade communication for multi-unit commercial HVAC systems with full register mapping.
🔗
Custom OEM Protocols
Various
Proprietary protocols from regional AC brands — reverse-engineered on request for OEM integration projects.
📱
IoT Bridge Protocol
MQTT / HTTP / BLE
Our own translation layer that converts decoded AC data into standard IoT protocols for cloud integration.
🔬
R&D Custom Analysis
On-Request
Have a protocol we don’t cover? We take on custom R&D projects. Contact us to discuss.
Research Areas

What We’re Working On

🌡️
Inverter Frequency Monitoring
Real-time compressor frequency tracking for energy optimization and predictive maintenance.
🛡️
Fault Code Decoder
Comprehensive fault code libraries for major brands, translated to actionable diagnostics.
⚡
Energy Consumption Analytics
Protocol-level power consumption monitoring without additional hardware sensors.
🧠
AI-Assisted Protocol Mapping
Machine learning models to accelerate unknown protocol decoding from captured signal data.
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