MTW series DX thermostats for rooftop unit and split system applications

MTW Series DX Thermostats

A comprehensive thermostat series for DX rooftop units, split systems, and fan coil units (FCUs) - unified control logic across HVAC topologies with flexible communication and intuitive interfaces.
Product Lineup

The MTW Series DX Thermostats - a unified family of digital thermostats for DX rooftop units, split systems, and fan coil units (FCUs) in commercial and hospitality settings. The series shares consistent control logic and protection across both system types, with models differentiated by communication protocol, interface, and added features.

1

Selection Guide

All MTW Series models share the same core control capabilities across DX and FCU applications. The guide below shows how the series adapts to different equipment types - verifying application fit before choosing the model that matches your integration and interface needs.
DX system control logic diagram for MTW series thermostats
Dimension DX Systems (RTU / Split Systems) FCU Systems (Fan Coil Units)
Core Actuator Multi-stage compressors (staged on/off) Electric on/off valves (open/close)
Fan Management Fixed-speed fan interlock or 3-speed independent control (depending on equipment configuration) 3-speed independent control (Auto/Low/Med/High)
Protection Logic Compressor time-delay protection & multi-stage staggering Valve anti-short-cycle (deadband setting)
Energy Strategy Staged call + differential setting (avoid frequent loading) Valve on/off optimization + fan auto-speed modulation

Pro Tip from SASWELL HVAC Engineers

All three models fully support both DX and FCU systems - the core control architecture is identical across the series. Choose based on communication protocol (Modbus vs BACnet), interface preference (LCD/keypad vs color touchscreen), and added features (keycard integration, UI customization, or OTA updates). Select by integration environment and user experience goals, not equipment type.

Connectivity & Integration

Native BMS Protocols
Modbus RTU (T29MTW, SAS922XMTW optional) and BACnet MS/TP (SAS965MTW). Modbus supports 254 nodes per daisy-chain; BACnet scales to multi-building.

Mobile App & Remote Access
Real-time monitoring, parameter adjustment, and fault alerts via mobile connectivity. No on-site presence required.

OTA Firmware Updates
Built-in OTA on SAS965MTW for remote upgrades. No on-site refresh needed.

MTW series DX thermostats with BMS, BACnet MS/TP and OTA remote monitoring

Global Market Readiness

International Compliance
CE, FCC, and RoHS certified for smooth market entry across North America, Europe, and Asia-Pacific.
Universal Power Supply
Wide-range input (110–240V AC, 50/60Hz) accommodates global voltage variations. No extra conversion modules needed.
Global Support & Documentation
Technical documentation and installation guides in English and Chinese, backed by worldwide support from planning to post-deployment.
Global market compliance certifications for MTW series DX thermostats
Get in Touch

Contact our friendly customer service team for any questions, concerns, or suggestions. We'd love to hear from you.


Headquarters Hotline: +86 755 61218391 Headquarters Hotline +86 755 61218391

Headquarters Email: info@saswell.com

Tech Support Email: support@saswell.com

CONTACT US
If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!
Contact Us
SUBMIT NOW
Subscribe to Our Emails
Never miss SASWELL hot deals, news, and updates tailored for you.