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Leading Boiler Thermostat Manufacturer & OEM/ODM Strategic Partner

As a global pioneer with over 20 years of expertise in HVAC control technology, Saswell serves as an "Innovation Accelerator" for boiler manufacturers, global distributors, and system integrators. We provide scalable, future-proof control ecosystems and serve as a trusted supply chain partner tailored to your brand’s specific requirements.

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HomeProductResidentialThermostatsLeading Boiler Thermostat Manufacturer & OEM/ODM Strategic Partner
Hot Products

From traditional wired dry-contact controllers to cutting-edge OpenTherm, Zigbee, and Matter compatible devices, our product range ensures seamless integration with global boiler brands including Worcester Bosch, Vaillant, Ideal, Baxi, and many more. Saswell has the engineering depth to support your professional market growth.

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IoT Connectivity Decision Guide: Wi-Fi vs. Zigbee vs. Matter

Technical Specs Wi-Fi (2.4GHz) Zigbee 3.0 Matter (Over Thread/Wi-Fi)
Gateway No Gateway Needed Requires Zigbee Hub Requires Border Router
Power High (Wired/Frequent Bat.) Ultra-Low (2yr+ Battery) Low (Thread Optimized)
Reliability Depends on Router Local Link (Offline) High (Local Control)
Networking Limited (~20 devices) Super Mesh (100+ devices) Self-healing Mesh
Ecosystem Brand-specific App Gateway Dependent Native Apple/Google/Alexa

Which One Fits Your Business?

● Wi-Fi: The top choice for mass-market consumers due to its "Plug-and-Play" nature.

● For Integrators: Zigbee 3.0 is the industry standard. Its Local Automation ensures heating remains functional even during internet outages.

● For Innovation Leaders: Matter represents the future, offering users ultimate freedom without proprietary app limitations.

Control Logic Decision Guide: Standard vs. OpenTherm

Protocol Type Control Logic Core Advantage
Standard (On/Off) Relay Switching Universal compatibility for all dry-contact boilers
OpenTherm (OT) Modulating Control Deep energy saving; reduces boiler cycling

Standard On/Off Guide

Simple logic, similar to a light switch. The boiler runs at full power until the set point is reached, then shuts down. This leads to water temperature fluctuations.

OpenTherm (OT) Guide

A sophisticated "two-way conversation" to adjust flame size in real-time. As the room reaches target temperature, the flame lowers, keeping the boiler in its most efficient zone.

B2B Value

OpenTherm extends boiler lifespan, improves gas efficiency by 5%-15%, and meets Boiler Plus requirements for modern heating systems.

Core Technical Functions
  • Open Window Detection
    Automatically enters energy-saving mode during sudden temperature drops to prevent energy waste.
  • Anti-frost Protection
    Triggers the boiler if ambient temperature falls below 5°C to prevent pipes from freezing and bursting.
  • Flexible Programming
    Supports 7-day, 5+2, or 24h cycles with 6 daily time/temperature periods for personalized comfort.
Get In Touch

Contact our friendly Customer Service team for any Question,Concern, or Suggestion. We'd love to hear from you!


Headquater hotline: +86 755 61218391

Headquater email: info@saswell.com

MENA tech support hotline: +97155 6743682

MENA tech support email: support@saswell.com

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