ShenZhen Toupwell Technology Co.,Ltd

DX Unit Thermostats for Direct Expansion Air Conditioning

Toupwell manufactures DX thermostats for compatible direct expansion air conditioning and packaged HVAC systems. Our range provides room temperature control with compressor demand outputs, fan operation and model-specific heating and cooling functions.

Choose from TP518, TP501 and TP505 series configurations, with 24VAC or mains-powered versions and selected WiFi options. We support HVAC equipment manufacturers, distributors and project contractors with product matching, sample evaluation and OEM/ODM development.

Our Thermostats Wholesale range helps suppliers source controls for different heating and cooling applications, with configurations matched to the equipment they serve.

Match Your DX Thermostat to the Equipment

Compressor Demand Control

A DX unit thermostat measures room temperature and generates heating or cooling demand according to the setpoint and configured operating sequence.

Toupwell DX products use on/off compressor control outputs. The connection must match the unit’s control circuit, contactor or interface requirements. Thermostat relay ratings should not be treated as permission to switch a compressor motor directly.

Fan Operation

Available configurations include single-speed and three-speed fan control. Select the version that matches the fan motor wiring, operating voltage and load.

Correct fan selection matters during both new installations and replacement projects. A thermostat designed for switched fan speeds is not automatically compatible with a proprietary electronic fan interface.

Single-Stage and Staged Applications

The TP518 DX page identifies a single-stage configuration. Selected TP501 configurations offer single- or double-stage compressor system support.

Specify the required number of compressor demand outputs and heating stages before ordering. Stage availability depends on the exact model and wiring arrangement.

DX Thermostat Features and Technical Options

The following table summarizes options shown in Toupwell’s DX product documentation. Confirm the final specification for the ordered configuration.

Relay ratings and terminal functions must be checked individually. Select the power version at ordering; different voltage options do not mean that every thermostat accepts both supplies.

Explore the Toupwell DX Product Range

TP518 Series

The TP518 digital DX unit thermostat provides single-stage room control with fan configuration options, a backlit display and compressor delay.

It is a starting point for commercial air conditioning projects requiring local temperature adjustment and compatible on/off equipment control.

TP501 Series

The TP501 WiFi DX thermostat combines connected room operation with configurable fan and compressor control.

Confirm the compressor stage arrangement, supply voltage and programming requirements when selecting a version.

TP505 Series

The TP505 DX thermostat offers another platform for packaged-unit control projects.

WiFi-enabled configurations support Tuya or Smart Life app operation. Heating sequence, compressor stages and communication requirements should be agreed during model selection.

Local, WiFi and Project Communication Options

Local Operation

A backlit display and accessible room controls allow occupants to adjust temperature and operating mode. Selected programmable versions provide scheduled operation to reduce unnecessary conditioning outside occupied periods.

WiFi Control

WiFi-enabled models add remote temperature and mode adjustment. Confirm app support and connectivity requirements for the selected version before sample approval.

Building Integration

Our DX and packaged-unit control solutions include project options for Modbus RTU and BACnet integration.

For a networked installation, define the protocol, data points and controller requirements first. WiFi app connectivity alone does not establish compatibility with a building management system.

Selection Support for Commercial HVAC Projects

Toupwell DX thermostats can be evaluated for compatible equipment serving offices, hotels, schools, retail spaces and other conditioned areas.

For packaged or rooftop equipment, the room controller must match the unit’s thermostat interface. Room thermostats with IP20 protection are intended for suitable indoor locations rather than exposed rooftop mounting.

Before requesting a recommendation, confirm:

● Equipment manufacturer, model and control diagram.

● Supply voltage and required compressor stages.

● Cooling-only or heating-and-cooling operation.

● Fan speed arrangement and electrical ratings.

● Built-in or external temperature sensing.

● Local, WiFi or building-network control.

● Existing wall box, mounting dimensions and replacement requirements.

For retrofit projects, photographs of the existing terminals and equipment diagram help identify a suitable configuration before installation.

Manufacturing and OEM/ODM Support

Toupwell brings over 17 years of thermostat industry experience to standard product supply and application-specific development.

Our manufacturing process includes SMT assembly, AOI inspection, DIP assembly and functional testing. Products undergo 24 or 48 hours of aging testing according to their requirements.

Through our OEM/ODM thermostat services, we support:

● Custom logos, housing colours and packaging.

● Localized manuals and user-interface requirements.

● Software, hardware and structural development.

● Evaluation of control sequences and project configurations.

● Sample preparation before production approval.

● Two-year after-sales support under agreed supply terms.

Applicable compliance documents, minimum quantities and development schedules are confirmed against the selected model and target market.

Frequently Asked Questions

Q1: What is a DX thermostat?

A DX thermostat is a room controller for compatible direct expansion HVAC equipment. It generates temperature demand and controls configured compressor and fan outputs.

Q2: How does it differ from an FCU thermostat?

A DX system uses refrigerant-based cooling, while a hydronic fan coil normally uses chilled or hot water. Their control outputs and sequences may differ even when the wall controllers look similar.

Q3: Does the thermostat directly power the compressor?

It should connect through the equipment’s specified control interface. Motor switching and contactor requirements must follow the unit’s wiring diagram.

Q4: Can Toupwell DX thermostats control three-speed fans?

Selected configurations support three-speed fans. Confirm the motor wiring, voltage and load before selecting the thermostat.

Q5: Are WiFi and BMS functions standard?

No. WiFi, Modbus and BACnet availability depends on the model and project configuration. Specify each required communication function when requesting a quotation.

Q6: Can a Toupwell thermostat replace an existing controller?

Replacement depends on voltage, outputs, stages, fan wiring and control logic. Share the existing controller details and equipment diagram for review.

Request a DX Unit Thermostat Recommendation

Send your equipment model, wiring diagram, supply voltage, compressor stages, fan configuration and required quantity. Include communication, branding and installation requirements where applicable.

Contact Toupwell to discuss suitable DX thermostat configurations, sample availability and quotation details.