SAS922XBMTW

Smart Dual System Thermostat for FCU & DX Units

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Wi-Fi & RS485 (Modbus) Dual Communication

Compatible with FCU, DX, and Two-Pipe Systems

Stylish LED Touch Screen & Voice Control

Optimize Energy Use with 7-Day Programming

External Sensor Input & Permanent Setting Retention

Seamless BMS Integration & Smart Home Ready

Home Product Commercial Thermostats Fan Coil Thermostats

Product Description

The SAS922XBMTW is a highly versatile, intelligent dual-system thermostat that bridges FCU and DX control. Designed to efficiently manage both Fan Coil Units (FCU) and Direct Expansion (DX) cooling/heating systems, it seamlessly combines smart home features (Wi-Fi, Alexa/Google Assistant) with professional BMS integration via Modbus RTU (RS485). Its sleek LED touch interface and 7-day programming make it an energy-efficient and user-friendly choice for high-end residential and commercial applications.

Key Functions

App Remote Monitoring

Monitor and adjust temperature settings anytime, anywhere via the Tuya smart App on your smartphone or tablet.
Multi-Mode Compatibility

Supports Heating/Cooling, two-pipe systems, and is selectable for either FCU or DX terminal units.
Voice Interaction

Seamlessly integrate with smart speakers like Amazon Alexa and Google Assistant for hands-free temperature adjustments.

System Integration

Seamlessly integrate with smart speakers like Amazon Alexa and Google Assistant for hands-free temperature adjustments.
High-Accuracy Control (0.5°C)

Features 0.5°C accuracy and supports external sensor input for enhanced temperature sensing.
Permanent Settings Retention

Pre-heating, Boost mode (1-12 hours adjustable), Child Lock, and Mute mode for versatile use.

Product Selector

Model No.

Heat/cool

Cool only

Pipe

Speed fan

Programmable

Window card

Room card

External Sensor

Modbus RTU

WIFI

Power

Manual

SAS922XBMTW-7S-WIFI(TY)-485

√

AC Fan

√

220VAC

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Product Parameters

Power Supply: 100-240VAC 50/60Hz
Temperature setting range: 5℃~35℃
Temperature setting accuracy: 0.5℃
Temperature display range:0℃~50℃
Temperature accuracy: 0.1℃
Output:Fan Relay Amps 8(5)A
Dimensions: 88mm×88mm×15mm

Wi-Fi Smart Control App Interface for SAS922XBMTW Thermostat with 7-Day

App Remote Control

Monitor and manage your home's temperature anytime, anywhere.

Voice Control and Alexa/Google Assistant Setup Screen for Smart FCU DX Thermostat

Voice Remote Control

Compatible with Amazon Alexa and Google assistant.

Comfort in Every Season

Compatible with both heating and cooling systems, this smart thermostat gives you total control — keeping you warm in winter and cool in summer, wherever you are.

Stay Warm All Winter

This thermostat is designed to support heating systems, keeping your home cozy and comfortable during the coldest months. Effortless temperature control ensures warmth exactly when you need it.

Product Application Scenarios

This versatile thermostat is perfect for projects that demand both high-level system control and user convenience. Ideal for luxury apartments, boutique hotels, commercial offices, and energy-saving retrofit projects where integration into a larger BMS is necessary, yet individual unit smart control (Wi-Fi/Voice) remains a priority for the end-user or tenant.

Hospital

Office-Building

Shopping-Mall

Partnership & OEM/ODM Support

We are not just a supplier; we are your strategic partner. SASWELL offers a complete, one-stop partnership solution, encompassing flexible OEM/ODM development, expert technical support for BMS integration, and reliable global after-sales service, fully empowering you to expand global markets with innovative and dependable HVAC automation products.

Bespoke Customization and Scale Production

We provide flexible OEM/ODM services to perfectly match your unique market demands. From hardware design, software features, to branding (Logo/App UI), our responsive design and engineering teams support everything from fast prototyping to large-scale mass production, ensuring your rapid market entry.
Expert Technical Support

Our team of HVAC automation experts provides full lifecycle support. This includes system integration consulting (especially for RS485/Modbus BMS connectivity), application guidance, and detailed technical documentation to ensure your projects move efficiently from planning to deployment.
Global After-Sales Service and Quality Assurance

SASWELL is committed to delivering exceptional quality backed by global support. We offer standard product quality warranties and have specialized teams to handle worldwide technical troubleshooting and component supply, ensuring your customers experience continuous and reliable climate control solutions.