4-Inch EC FCU Thermostat | Modbus 0-10V & Low Noise Control

SAS965FCU/PIT-EC Series

4-Inch Color Screen EC Fan Coil Unit Thermostat

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0-10V Stepless EC Fan Speed Control

Energy-Efficient, Low Noise Thermostat ( < 35dB )

Dual Valve Control: PI Proportional / On/Off

Modbus 485/WIFI for BMS Integration

7-Day Rapid EC Thermostat UI Customization

60-Day ECR Response for Project Deployment

Home Product Commercial Thermostats Fan Coil Thermostats

Product Feature

This series of EC Fan Coil Unit Thermostats is specifically engineered for Brushless DC (EC) fans, serving high-end, energy-efficient FCU systems. It utilizes a 0-10V analog output for stepless speed control of the EC fan, significantly boosting system energy efficiency and reducing operational noise. The series offers dual control options: PI Proportional Valve (0-10V) and On/Off Valve (220VAC), while supporting Modbus 485/WIFI communication for seamless integration into intelligent building EC FCU systems.

Key Functions

Remote Management

Achieves EC FCU remote start/stop, mode switching, and temperature setting via Modbus 485/WIFI, compatible with smart building management systems.
Mode Switching

Supports Cooling, Heating, and Ventilation modes, combined with EC fan automatic/manual speed adjustment to meet diverse FCU system operating needs.
Programming Mode

Allows for scheduling (timed/weekly programming) to achieve fine-grained energy management for the EC FCU Thermostat, reducing energy consumption in high-end projects.

System Compatibility

Adapts to 2-pipe / 4-pipe Brushless DC FCU systems, enabling seamless replacement of traditional thermostats without additional modifications.
Safety Protection

Features EC fan coil unit anti-freeze protection and keypad lock functions to ensure the safe and reliable operation of the SAS965-EC series devices.

Product Selector

Model No.	Fan Control Type	Water Valve Control Type	Max Load Current	Recommended Application	Manual
SAS965PIT-EC	EC Fan (0-10V)	PI Proportional Valve (0-10V)	3A	High-End Precision: First choice for projects requiring EC fan stepless speed control + precise water temperature control (e.g., 5-star hotel rooms, Class A offices). Balances energy saving and high comfort.	download
SAS965FCT-EC	EC Fan (0-10V)	On/Off Valve (220VAC)	6A	EC Fan General: For energy-saving projects using EC fans but On/Off water valves (e.g., boutique hotels, high-end apartments). Needs stepless speed control but moderate water temperature precision.	download

Product Parameters

* Power supply: 100~240VAC 50/60Hz
* Standby Power Consumption: ≤2W
* Display accuracy: 0.1°C
* Temperature setting step: 0.5℃
* Communication: Modbus 485/ 2.4G WIFI
* Displayed temperature range: 0~70°C
* Operating temperature range: 0~50°C
*Temperature setting range: 5~35°C

*Dimensions 86x86x12mm

Rapid programming

Supports programming via the device or APP settings.
Adjustable fan speeds for personalized comfort

Easily switch between Auto, Low, Medium, and High speed to match your cooling/heating/ventilation needs
Child lock function for safe control

Prevent unintended changes with a simple lock
—Peace of mind for families and public spaces
Voice remote control

Compatible with amazon Alexa and Google assistant.

FAQ

You could choose the types you like, and then sent the model no. to the email box info@saswell.com. Our salesman will get in touch with you within 24 hours. And we will send the data sheet to you for double check. Then we will prepare the sample accordingly. The sample needs to charge. So we will calculate the fare by emails back the proforma invoice for your reference. Then we will express the sample to you by express, you could get the sample about 4-5 days later.

Customizable screen brightness

Three-Level screen brightness adjustment

Adaptive sleep mode for perfect nighttime comfort

Temperature shifts intelligently over 8 hours to enhance rest and reduce power consumption.

Product Dimensions

Embedded installation, compatible with standard 86-type junction boxes, no additional drilling or wall modifications required.

Product Installation

Product Application Scenarios

This series of Brushless DC (EC) Fan Coil Unit Thermostats is primarily used in high-end commercial buildings, 5-star hotels, top-tier hospitals, and luxury residences—environments demanding high energy efficiency, low noise, and maximum comfort in their EC FCU systems. Whether your system uses a PI proportional valve for precise water temperature control in variable flow FCU systems or an On/Off valve in conventional EC fan coil units, our solutions provide high-precision control. This series is the core product for upgrading FCU systems toward energy efficiency.

Partnership Support

As an established China-based manufacturer and supplier, we offer professional, customized cooperation support services to global HVAC integrators, equipment manufacturers (OEMs), and engineering companies. Our services include:

Technical Consulting

Professional engineer teams provide selection guidance, parameter configuration advice, and project technical support for fan coil unit thermostats.
Customization Services

7-day UI customization and 60-day function customization based on the product platform. We offer deep customization of functional modules (e.g., adding sensor interfaces) and communication protocols (e.g., designing exclusive protocols) based on specific building energy saving needs and system compatibility requirements.
After-Sales Guarantee

We provide an 18-month product quality warranty and establish a localized rapid response mechanism to ensure timely resolution of issues, minimizing client operational risk.