TC4

Key Features

Why TC4?

24 TOPS combined AI (RK3576 + iCore-1828) runs a 7B-parameter LLM locally — no cloud round-trip, all HVAC manuals answered in milliseconds
Built-in temperature, humidity, PM2.5 and ambient-light sensors — one device replaces four wall instruments
Voice-first control with dual-mic far-field array and offline wake-word "小美" — works in low-bandwidth and offline hotel / hospital environments
Modbus RTU/TCP + BACnet MS-TP + IR blaster with 1.5 M+ codes — talks to virtually every VRV/VRF, chiller, ERV, and smart damper on the market
RAG knowledge base indexed in on-device FAISS — staff can ask in natural language: "What's the PM2.5 trigger threshold in the school wing?"
Standard 86-type wall box form factor (86 × 86 mm) drops into existing junction boxes — no rewiring for retrofit
Multi-protocol IoT: Wi-Fi 6, BLE Mesh, Zigbee 3.0, Thread border router, RS485, CAN — bridges Zigbee sensors, BLE locks, and Modbus meters in one hub
IEC 60335-1 + 4 kV surge rated for residential and commercial deployment
PC + ABS V0 housing with 2.5 D curved glass and AF coating — wipes clean, anti-fingerprint, 5 W low power
Android 14 + METO Shell — supports OTA updates, MDM enrollment, and remote scripting via JSON-RPC

Specifications

Detailed Specifications

Application SoC	Rockchip RK3576 (4× Cortex-A76 + 4× Cortex-A55, 6 TOPS NPU)
AI Coprocessor	iCore-1828 (18 TOPS NPU) — combined 24 TOPS for on-device LLM + RAG
Display	4″ IPS 480×800 capacitive multi-touch, anti-glare + AF coating, 350 nit
Form Factor	Standard 86-type wall box (86 × 86 mm front, 38 mm depth, 1-gang)
Built-in Sensors	Temperature ±0.2 °C, Humidity ±2 %RH, PM2.5 laser scattering 0–1000 μg/m³, ambient light
Voice Interaction	Dual-mic far-field array, beam-forming, AEC echo cancellation, wake-word + offline hot-word "小美"
AC Control	Modbus RTU/TCP, BACnet MS-TP, IR blaster (1.5 M+ codes), Wi-Fi AC cloud SDK
Fresh Air Control	RS485 to ERV/HRV, 0–10 V analog damper, BACnet, MQTT, supports CAV / VAV / DCV
Wired IO	2 × RS485 (HVAC bus), 1 × CAN, 4 × dry contact, 2 × 0–10 V analog in/out, 1 × RJ45 optional
Wireless	Wi-Fi 6 (2.4/5 GHz) + Bluetooth 5.3 (BLE Mesh / Zigbee 3.0 / Thread border router)
Power	100–240 V AC live + neutral, 24 V DC adapter fallback, max 5 W
System	Android 14 + METO Thermostat Shell, supports on-device 7B LLM (INT4) and FAISS vector store
Mechanical	PC + ABS V0 housing, white / black dual color, 2.5 D curved glass, anti-fingerprint AF
Safety	IEC 60335-1 household, surge 4 kV, over-temperature cut-off 75 °C, child lock

Applications

Scenarios

Residential apartments and villas — whole-home HVAC and fresh-air controlHotel rooms — voice-controlled climate for contactless guest experienceHospital wards — IEC 60601-grade isolation rooms, staff ask AI for HVAC SOPSchool classrooms — PM2.5 + CO2-driven demand-controlled ventilation (DCV)Office meeting rooms — Modbus VAV box + occupancy-based set-backServer rooms and IDF closets — precise temperature + humidity loggingRetail chain stores — RAG answers franchisee HVAC questions on the spotOld residential building retrofit — drop-in 86-box replaces legacy mechanical thermostats

Why TC4?

Detailed Specifications

Scenarios

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