The CH7500 is a professional-grade Universal Wireless Thermostat engineered for the rigorous demands of the North American commercial and residential markets. Optimized for 3H/2C Multi-stage Heat Pump and conventional systems, it features a unique Dual-Wireless architecture: 2.4GHz WiFi for seamless App/Cloud management and RF 868MHz for rock-solid, wire-free communication between the console and the HVAC unit. Whether you are integrating into a BMS via BACnet or performing a rapid smart retrofit, the CH7500 provides the reliability and flexibility that modern HVAC professionals require.
The CH7500 is engineered as a high-performance, universal wireless thermostat tailored for professional HVAC distributors and system integrators. Optimized for multi-stage heat pump systems and conventional HVAC units, it offers a scalable hardware platform with optional communication protocols including BACnet MS/TP, Modbus RTU, Zigbee, or 2.4GHz Wi-Fi. This flexibility allows B2B partners to seamlessly integrate the CH7500 into diverse environments—from sophisticated Building Management Systems (BMS) to modern smart home ecosystems—providing a reliable, brand-ready solution that reduces onsite installation labor and inventory complexity.
Flexible Protocols: Choose from BACnet MS/TP, Modbus RTU, Zigbee, or Tuya WiFi to match your local market requirements.
Private Labeling: Support for custom logo printing, branded App interfaces, and tailored packaging.
Certified Reliability: All units come with FCC/CE compliance, ready for your brand’s rapid market entry.
Scalable Architecture: From residential smart homes to large-scale commercial building integrations.



System Versatility: Compatible with Heat Pump (3H/2C), Conventional HVAC (2H/2C), and both 2-Pipe & 4-Pipe Fan Coil systems.
Dedicated Terminals: Includes specialized terminals for Emergency Heat (E) and Auxiliary Heat (W/AUX) to ensure comfort during extreme weather.
C-Wire Reliability: Requires a 24V Common Wire to ensure a stable, uninterrupted power supply for the high-resolution TFT display.
This adapter adds the crucial C wire (Common wire) to power your smart thermostat, eliminating the need for extensive rewiring in homes lacking a C wire.

ISO Certified Production: Every CH7500 unit is manufactured in an ISO 9001:2015 and ISO 14001:2015 certified facility.
Compliance Standards: Fully certified with CE (RED/EMC/LVD), RoHS, and FCC marks for global market access.
OEM Experience: Backed by E-TOP Controls, a professional manufacturer with over 20 years of experience (since 2003) in ODM/OEM services.
| Display |
|
| System Compatibility | Conventional (2H/2C), Heat Pump (3H/2C), 2/4-Pipe Fan Coil |
| Multi-Protocol | RS485 (Modbus RTU / BACnet MS/TP), Zigbee or 2.4GHz Wi-Fi (Tuya) Optional |
| Power Supply | 20 to 30 VAC, 50/60 Hz (C-Wire required for constant power) |
| Output Rating | 0.5 A each (Y, Y2, W/AUX, W2, G) |
| Set Temp. Range |
Heat/Cool 41~ 95°F (5~35℃) Auto- Heat 41~91°F (5~33℃) Auto- Cool 45~95°F (7~35℃) |
| Accuracy | ±1°F (±0.5°C) for precise temperature modulation |
| Operation Modes | Cool, Heat, Auto Mode, Fan Mode, Emergency Heat |
| Programmability | 7 Days 4 Periods (Fully customizable via device or App) |
| Modes | Cool/Heat/Heat&Cold/Fan Mode |
| Fan Speed | Fan On/Fan OFF |
| Programmability | 7 days 4 periods ( Customizable) |
| Protection Class | IP20 |
| Thermostat Dimension | 90X90X23mm (Ultra-slim design) |
| Material | Fire-resistance ABS+PC (RoHS & Reach compliant) |
| Certificate | CE (RED/EMC/LVD), RoHS, FCC, ETL |
| Quality Assurance | ISO 9001:2015 Quality Management System certified manufacturing |
| OEM & ODM | 1. Customized logo and package |
| 2. Customzied software ( change to customer’s user interface and control logic) | |
| 3. Customized hardware ( change the PCB and schematic based on the request) |

A: Yes. E-TOP Controls is a professional ISO 9001:2015 and ISO 14001:2015 certified ODM & OEM thermostat manufacturer established in 2003. We operate our own advanced production facility to provide end-to-end services from R&D to mass production for global HVAC brands.
A: Yes. We offer free logo printing on the hardware for wholesale orders meeting a MOQ of 500pcs. This allows you to build brand authority and market presence with zero additional branding costs.
A: Yes. We provide fully customized packing boxes (MOQ 1000pcs). As an engineering-driven manufacturer, we can also tailor the LCD interface (UI) and specific control logic to meet the unique HVAC requirements of your local market.
A: We ensure a rapid supply chain: 3 working days for samples and approximately 25 working days for mass production orders, ensuring your projects stay on schedule.
Q5: Does the CH7500 support multi-stage heat pump systems?
A: Yes. The CH7500 is specifically designed for high-performance HVAC units, supporting up to 3H/2C (3 Stages Heating / 2 Stages Cooling). It intelligently manages Auxiliary Heat and Emergency Heat (E) to maximize both indoor comfort and energy efficiency.
A: The CH7500 features a high-contrast segmented LCD display that provides superior tactile reliability and clear visibility from all angles. Unlike touchscreens, it is ideal for high-traffic environments like hotels, offering a durable interface for long-term commercial use.
A: Yes. The CH7500 uses advanced RF 868MHz wireless communication. One thermostat can pair with up to 8 base modules simultaneously. This wireless architecture eliminates the need for expensive in-wall rewiring, making it the perfect solution for PTAC retrofits and multi-unit buildings.
A: For the Base Module, a 24V C-wire (Common Wire) is required for stable operation. However, the CH7500 Display Unit offers flexible power options, supporting both 2 x AA batteries or a USB 5V power supply, providing ultimate installation flexibility.
A: Yes. Through its integrated Tuya WiFi module, the CH7500 is fully compatible with Amazon Alexa and Google Assistant for hands-free voice control and can be managed remotely via the Tuya Smart or Smart Life app.
A: The CH7500 is a highly versatile universal multi-stage thermostat designed for standard Heat Pump and Conventional HVAC systems (up to 3H/2C). It is the perfect solution for residential and commercial central air systems.
Please note: If you are specifically looking for a PTAC (Packaged Terminal Air Conditioner) controller, we recommend our specialized CH7400 series, which is dedicated to PTAC plug-and-play environments. For all other multi-stage heat pump installations, the CH7500 offers superior wireless reliability and smart control.