1. Product Overview

This round multi-stage WiFi smart thermostat is a high-end smart HVAC control device specially designed for overseas US standard AC24V heating & cooling systems. It is fully compatible with four mainstream HVAC equipment: conventional central air conditioner, multi-stage heat pump, auxiliary dehumidifier and humidifier, meeting the integrated demands of constant temperature, constant humidity and indoor air monitoring for villas, hotels and commercial buildings.

Adopting luxury round appearance with aluminum alloy frame and tempered glass touch screen, it comes with 3 color options: champagne gold, matte black and dark grey. Ultra-thin 86-size surface mounting design with rear hidden cable entry for neat wiring. Equipped with 480*480 high-definition TFT full-color touch screen and integrated multi-sensor to detect temperature, humidity, CO₂ and TVOC simultaneously for visualized air quality. Built-in 2.4G WiFi for mobile APP remote control, 7-day 6-period energy-saving schedule and child lock safety function. Two standardized wiring diagrams for conventional HVAC and heat pump systems are provided for simple installation & commissioning, the ideal intelligent upgrade panel for residential and commercial overseas HVAC projects.

2. Complete Technical Specification Table

3. Six Core Product Advantages

3.1 Wide Compatibility For All Mainstream 24V US HVAC Systems

One thermostat fits multiple HVAC devices without model replacement, two standardized wiring drawings simplify electrician installation:

• Conventional Central Air Mode: Support dual-stage cooling, dual-stage heating and independent fan output;

• Multi-Stage Heat Pump Mode: Compatible with heat/cool reversing valve, auxiliary heater, external dehumidifier & humidifier.

  Perfectly match standard AC24V cooling & heating units of overseas villas and apartments, easy stock management and field construction.

3.2 4-In-1 Indoor Air Quality Real-Time Monitoring

High-precision composite sensor built inside, 4 key indoor environment data displayed synchronously on screen: real-time temperature, relative humidity, CO₂ concentration and TVOC volatile organic compound value. Users can clearly master indoor air quality, and link with dehumidifier & humidifier for constant temperature & humidity environment, ideal for high-end residences, baby rooms and office buildings.

3.3 2.4G WiFi Mobile APP Remote Control, Anytime & Anywhere Access

Stable 2.4G WiFi communication enables full remote access after pairing mobile APP. Users can turn on/off air conditioner, adjust set temperature, check indoor temperature, humidity and air quality during commuting or business trips. Multi-user device sharing function supports unified HVAC management for whole family or hotel front desk, greatly improving smart control convenience.

3.4 7-Day 6-Period Programmable Schedule For Automatic Energy Saving

Customize independent temperature for 6 time segments per day within a full week. The system automatically switches cooling/heating/standby mode according to daily schedule: lower set temperature automatically to save energy when residents go out, pre-adjust comfortable temperature before arriving home, and switch to low-power anti-freeze mode overnight. Compared with 24-hour constant running, it drastically cuts power consumption of air conditioner and heat pump, reducing long-term HVAC operation cost significantly.

3.5 Child Lock Safety Protection To Prevent Accidental Misoperation

Independent child lock function locks all touch screen buttons with one tap. Under lock status, temperature adjustment, mode switch and equipment power on/off are disabled. It avoids equipment shutdown and disordered temperature caused by kids’ random touch, providing safer use experience for family houses and hotel guest rooms, preventing equipment damage and uncomfortable indoor temperature.

3.6 Luxury Ultra-Thin Round Design, 3 Colors Match All Decoration Styles

Different from traditional square thermostats, curved round body with metallic aluminum frame and high-transmittance tempered glass touch screen delivers premium texture. Three color options (champagne gold, matte black, dark grey) perfectly fit modern minimalist, light luxury, industrial and Nordic interior decoration styles. Ultra-thin 33.8mm thickness with standard 86 size surface mounting requires no wall renovation. Rear hidden cable entry ensures neat wiring without ugly exposed cables, upgrading the whole smart home decoration grade.

4. Dual Standard Wiring Guidance

Two complete wiring diagrams are attached to cover mainstream overseas HVAC equipment:

1. Conventional Central Air System Wiring: Terminals W2/W1 for 2-stage heat, Y2/Y1 for 2-stage cool, G for fan, C common terminal, RH/RC power supply, supporting external independent dehumidifier and humidifier;

2. Multi-Stage Heat Pump System Wiring: Terminals AUX auxiliary heat, O/B reversing valve, G fan, Y2/Y1 dual-stage cooling, C common power supply, compatible with heat pump circulation units. Clear terminal labels allow fast installation for novice electricians.

5. Main Application Scenarios

1. Overseas High-End Residential: Central air & heat pump intelligent control for European & American villas, single-family houses and apartments;

2. Hotel & Homestay Guest Rooms: Independent room temperature control for chain hotels and vacation homestays, centralized background management via APP;

3. Commercial Public Buildings: Constant temperature & humidity HVAC control for office buildings, exhibition halls and clubs;

4. Healthy Comfort Spaces: Baby rooms, rehabilitation apartments and laboratories requiring both temperature regulation and indoor air quality monitoring.

6. Complete Factory Packaging Accessories

Full installation kits included for immediate construction after unboxing, accessory list:

1. Round smart thermostat main display unit ×1

2. 86-size mounting base ×1

3. Fixing screws ×2

4. Power connection cable ×1

5. Product datasheet & wiring diagram manual ×1