4-Inch RTU Thermostat | 2-Stage H/C, Universal Control & Economizer

SAS965MTW-7RS-485-WIFI

4-Inch Color Screen RTU Thermostat

Get a quote

Multi-Stage: Supports 2-stage compressors for stable H/C output.

System Compatibility: Supports Single-Cool, 1H/1C, and 2H/2C systems.

Fan Compatibility: Supports both 3-speed and single-speed fan control.

Application Versatility: Adapts to both RTU/DX and standard FCU applications.

Integrated Economizer for maximum free cooling/energy savings.

Smart BAS Ready: WIFI, Modbus, and native Alexa/Google voice control.

Rapid Deployment: 7-Day UI & 60-Day ECR for project delivery.

Home Product Commercial Thermostats RTU Thermostats

Product Feature

Engineered for commercial HVAC, this RTU Thermostat offers universal control for up to 2-stage Heat/Cool systems and multi-speed fans. Featuring high-precision staging and built-in economizer support, the unit integrates seamlessly via WIFI/Modbus for BAS management and voice control, ensuring comfort and maximized operational economy across diverse commercial infrastructures.

Key Functions

Mode Control

Supports Cooling, Heating, Auto, Emergency Heat, and Off modes.
Fan Control

Auto/On options for multi-speed fan control, meeting DX system needs.
System Fault Diagnosis

Real-time display of error codes to speed up maintenance and troubleshooting.

Data Logging

Records key operational and consumption data for BAS optimization and analysis.
Temperature Calibration

Supports sensor deviation adjustment to ensure high display accuracy.
Security/Lockout

Multi-level password protection prevents unauthorized setting changes.

Product Parameters

● Power source: 100~240V AC、18-30VAC 50/60Hz
● Display Accuracy: 0.1°C
● Temperature setting range: 5℃~35℃
● Temperature control accuracy: ±1℃
● Temperature display range: 0℃~70℃
● Temperature setting increment: 0.5℃
● Operation temperature range: -10℃~60℃

Product Dimensions

Product Installation

Product Application Scenarios

This RTU Thermostat is ideal for commercial spaces demanding precise control and efficiency, including retail chains, office buildings, warehouses, and hospitals. Its wide compatibility and staging capability make it the reliable, high-efficiency solution for balancing comfort and energy costs in diverse RTU and commercial DX applications.

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.