Honeywell Home THX1200B6 ElitePRO S1200 Smart Thermostat WiFi 4H/2C
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The Resideo ElitePRO S1200 Smart Thermostat (THX1200B6/U) is a professional-grade WiFi thermostat designed for advanced residential and light commercial HVAC systems. Featuring a 5-inch customizable touchscreen, the S1200 delivers intelligent comfort control, indoor air quality monitoring, and remote system management through the First Alert by Resideo mobile app.
Built with RedLINK 3.0 wireless technology, the thermostat connects seamlessly with room sensors, outdoor sensors, and equipment interface modules for expanded zoning and system flexibility. Integrated occupancy detection and IAQ monitoring help optimize comfort while improving energy efficiency.
The ElitePRO S1200 supports complex HVAC applications including multi-stage conventional systems, heat pumps, radiant heating, fan coil units, and dual-fuel systems, making it ideal for professional installations requiring premium smart control capability.
Specifications:
Model Number: THX1200B6/U
Brand: Resideo (Honeywell Home)
Series: ElitePRO S1200
Product Type: Smart WiFi Thermostat
Power Requirement: 20–30 VAC (C-Wire Required)
Connectivity:
• WiFi (2.4 & 5 GHz)
• RedLINK™ 3.0
• Bluetooth
• Matter Compatible
System Compatibility:
• Up to 4 Heat / 2 Cool Heat Pump
• Up to 3 Heat / 3 Cool Conventional
• Dual Fuel Systems
• Hydronic & Radiant Systems
• Fan Coil & PTAC Units
Display: 5" Color Touchscreen
Programmability: Smart Scheduling / Auto-Away
Modes: Heat / Cool / Auto / Off / Emergency Heat
Fan Modes: Auto / On / Circulate
Sensors & Monitoring:
• Built-In Humidity Sensor
• VOC Air Quality Monitoring
• Estimated CO₂ Monitoring
• Occupancy Detection
Remote Control: First Alert by Resideo App
Voice Assistant Compatibility: Alexa, Google Home, Apple Home
Operating Temperature: 37°F – 102°F
Operating Humidity: 5–90% RH Non-Condensing
Dimensions: 5.24" W × 3.54" H × 0.96" D
Mounting: Wall or J-Box Mount
Included:
Thermostat
UWP Wall Plate
Cover Plate & J-Box Adapter
Mounting Hardware
Energy Star Certified