AC503 Smart Digital Floor Heating Thermostat — LCD Touch Control for Electric & Water Underfloor Systems
Dual System Compatible
Works with both electric underfloor heating and water/hydronic systems, covering the majority of residential and commercial installations.
Touch Button Control
Clean touch-button interface with large LCD display for effortless temperature adjustment and mode selection.
Temperature Accuracy
Precise NTC10K sensing with selectable room / floor / room+floor sensing modes to keep every room at the perfect temperature.
Quick Installation
Standard wall-mounted design with clearly labeled terminals. Fast, error-free wiring by any HVAC technician.
Modern Design
Slim white frame with a clean, minimal face that blends into modern interiors, hotels and apartments.
Reliable & Proven
16 years of HVAC control manufacturing experience. 3-year warranty with free spare-parts after-sales support.
At a Glance
Product Overview
The AC503 is Telin’s digital floor heating thermostat designed for both electric and water-based underfloor heating systems. Featuring a large high-contrast LCD display with touch-button control, it provides accurate room and floor temperature management with selectable sensing modes for maximum comfort and efficiency.
Whether installed in a private residence, hotel guest room or serviced apartment, the AC503 delivers dependable set-and-forget temperature control backed by Telin’s 16 years of HVAC manufacturing experience and a 3-year warranty.
Product Features
🌡 Flexible Sensing Modes
Room temperature, floor temperature or combined room+floor sensing modes give precise control whether installed over electric mats, water pipes or cable systems.
💜 Intuitive Touch Interface
Large LCD readout with responsive touch buttons makes daily temperature adjustment simple for every member of the household.
🔌 Simple & Clean Wiring
Clearly labeled terminals for power, load and sensor connections reduce installation time and prevent wiring errors on site.
🔧 Built to Last
Flame-retardant PC+ABS housing with proven electronics for years of dependable service in homes and hotels.
Product Parameters
⚡ Electrical
📏 Mechanical
🌡 Environment
Dimensions & Installation
Application Scenarios
The AC503’s clean design and flexible sensing make it a natural fit for modern homes, hotels and apartments.
Modern Apartment
Set-and-forget comfort for open-plan living spaces, with accurate floor sensing for even heat distribution.
Hotel & Serviced Apartment
Simple guest-friendly control that keeps rooms comfortable while supporting energy-saving temperature limits.
Private Villa
Discreet, stylish temperature control that complements premium interior design in villas and residences.
Ready to Discuss Your Project?
Get pricing, request samples, or consult our engineers about your custom HVAC control requirements.
Hubei Telin energy-saving equipment Co., Ltd (Production Base)
Add: No.1 Lingcheng Industrial Park, Lingxiang Town, Daye, Huangshi City, Hubei Province, China.
✉ sales@sztelin.com | ☎ +86 13410830001
