AC620F Smart Digital FCU Room Thermostat — Modern LCD Control for 2/4-Pipe Fan Coil Units
Reduce Project Cost
One universal model supports both 2-pipe and 4-pipe FCU systems. No extra SKU needed for mixed HVAC designs.
Versatile Connectivity
Supports wired modulating (0-10V) or ON-OFF relay control, with optional WiFi and RS485 (Modbus) for seamless BMS and smart home integration.
Cut Installation Labor
Standard 86×86mm junction-box mounting with quick-connect terminals. Install in under 5 minutes per room.
Lower Maintenance Costs
Modular front-panel design enables 30-second diagnostic access. No specialist tools required for on-site service.
Precision Comfort Control
NTC 10K high-sensitivity sensor delivers ±0.5°C accuracy across a 5-35°C setpoint range for consistent guest comfort.
Achieve Compliance with Ease
CE / RoHS certified with anti-flammable PC+ABS housing (UL94 V-0). Ready for hospitality, commercial, and residential projects worldwide.
At a Glance
Product Overview
The AC620F is a high-performance digital room thermostat engineered for precise temperature regulation of 2-pipe and 4-pipe Fan Coil Units (FCU) in hospitality, commercial, and residential buildings. Part of the Telin Smart Thermostat Series, it features a crisp LCD interface with three intuitive tactile buttons and supports both ON-OFF relay and 0-10V modulating control signals. With optional WiFi and RS485 communication, it offers flexible integration across diverse HVAC architectures and Building Management Systems (BMS).
Housed in a flame-retardant PC+ABS enclosure and powered by a proven NTC 10K sensor, the AC620F delivers ±0.5°C accuracy across a 5-35°C setpoint range. CE and RoHS certified, with full OEM/ODM customization available — from private-label branding and custom color shells to modified firmware logic — backed by 16 years of HVAC manufacturing expertise from Shenzhen and Hubei facilities.
0-10V Modulating
WiFi Optional
RS485 Modbus
ON-OFF Relay
Fan Speed Control
Hotel Card Compatible
CE Certified
Product Features
🏠 Modern Minimalist Design
The AC620F’s sleek white frame and large LCD display were designed to complement the aesthetic standards of luxury hotels and high-end residences. The low-profile 13mm depth sits flush against any wall finish, making it virtually disappear into the interior design while remaining instantly accessible to guests.
📡 Dual Control Mode Flexibility
Switch between relay-based ON-OFF and analog 0-10V modulating signals via a simple internal jumper — no firmware reprogramming required. This makes the AC620F compatible with both budget-friendly mechanical valves and high-end proportional actuators within the same project specification.
🌎 Smart Connectivity & Global Ready
Dual-voltage support, optional WiFi for remote app control, and RS485 Modbus communication ensure the AC620F can be deployed across international hotel chains and integrated seamlessly into centralized building management systems effortlessly.
🔒 Safety & Durability First
Every AC620F is housed in UL94 V-0 rated flame-retardant PC+ABS material. Internal relays are rated for over 100,000 switching cycles, and each unit undergoes 48-hour burn-in testing at our ISO 9001-certified facility before shipment.
Product Parameters
⚙ Electrical
📏 Mechanical
🌡 Environmental & Certifications
Dimensions & Installation
Product Application Scenarios
The AC620F series simplifies year-round thermal comfort management for projects of any scale. Its universal 2/4-pipe architecture and modular design eliminate wiring complexity and streamline procurement — all backed by 16 years of Telin HVAC engineering expertise.
Luxury Villa & Smart Home
Silent relay operation, crisp LCD visibility, and optional WiFi integration meet the aesthetic and smart-control demands of premium private residences.
Hotel Suite
Hotel-card/window-sensor inputs and RS485 communication enable intelligent energy management while maintaining five-star guest comfort.
Commercial Office
0-10V modulating control and Modbus connectivity integrate seamlessly with BMS for centralized energy optimization across building portfolios.
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
