The Alledio OEM Thermostat offers unparalleled flexibility as a premier OEM Modbus thermostat, engineered for HVAC manufacturers seeking a customizable and adaptable solution. Featuring a fully brandable user interface and adaptable firmware, it serves as a sophisticated, off-the-shelf solution that is ready for immediate and seamless integration. It is expertly designed to fit into a diverse array of HVAC systems, making it the ideal control component for applications such as fan coils, air handling units, and other equipment where relay control is essential.
Built for robust performance and versatile integration, the thermostat is equipped with a comprehensive set of technical features. Core connectivity is handled through Modbus RTU, which can be configured as a Client or Server, and is enhanced with WiFi for over-the-air (OTA) updates for expanded IoT capabilities.
Hardware is highly adaptable, with various I/O configurations available, including options for analog outputs, digital outputs, and dedicated relays for heating, cooling, and multi-speed fan control. Every unit also includes an input for an external NTC temperature sensor, alongside standard built-in sensors for temperature and humidity (Optional also: VOC).
As a dedicated OEM solution, the Alledio Thermostat is designed to become a natural part of your HVAC product ecosystem. We offer extensive customization, from modifying the firmware to support your proprietary communication protocols to tailoring the hardware to meet specific application demands.
Applications:
Whether you need to optimize airflow in large commercial spaces, ensure a comfortable air quality in school classrooms, or maintain ideal conditions in smaller residential units, our thermostat ensures reliable control.
Typical applications:
- Fan coil units (FCUs),
- Air Handling Units (AHUs),
- various other HVAC applications.
Supported Communication:
- Modbus RS485,
- adaptable to proprietary communication protocols.
- WiFi for over-the-air Firmware updates + options for connecting to proprietary Cloud infrastructure,
- Bluetooth.
Intelligent Environmental Control
The Alledio Thermostat delivers a comprehensive solution for managing indoor climates with precision and efficiency.
- Total Climate Management: Seamlessly controls temperature, humidity, and multi-speed fans. Dedicated relays for heating and cooling make it the perfect choice for demanding applications like Fan Coil Units (FCUs) and Air Handling Units (AHUs).
- Advanced Air Quality Monitoring: An optional, integrated sensor measures Volatile Organic Compounds (VOCs), enabling automated, demand-controlled ventilation to ensure a healthy and comfortable indoor environment.
- Smart and Efficient Operation: Features like user-defined scheduling and support for an external NTC temperature sensor allow for optimized energy use and flexible installation scenarios.
Advanced Connectivity and Integration
Designed for the modern, connected building, the Alledio Thermostat offers robust connectivity options to ensure flawless integration into any system architecture.
- Core Industrial Communication: Features Modbus RTU as its primary protocol, with the flexibility to be configured as either a Client or Server to fit your network requirements.
- Wireless and Cloud-Ready: Built-in WiFi enables effortless over-the-air (OTA) firmware updates and secure integration with cloud platforms via the MQTT protocol. Bluetooth is also included for advanced Industrial IoT (IIoT) applications like remote diagnostics and monitoring.
- Seamless System Integration: Ready to connect with any Building Management System (BMS) supporting Modbus, including major platforms like Siemens Desigo and Schneider Electric EcoStruxure. A full-featured API is also available for custom automation and remote control.
Relays, Outputs & Inputs
2 x Analog Output
2 x Digital Output
1 x Analog Output, 1 x Digital Output
Heating & Cooling Relays
Product number
Product number: ALL-TH-[…]
Technical Specifications for Alledio OEM Thermostat
| Power Supply | 5V to 24V DC/AC |
| Inputs | Power Supply Modbus Relays: Fan Speed (1 / 2 / 3 / auto / off) Relays: Heating / Cooling Optional: 2 × AO / 2 × DO / 1 × AO, 1 × DO External temperature sensor (NTC) |
| Communication Protocols | RS485 Modbus, RTU, half-duplex, Baud rate 9600 kbps, 19200 kbps, 38400 kbps, 57600 kbps, 115200 kbps. Parity: non, even or odd. RS485 bus load: ¼ unit load according to RS485 standard (max. 128 devices). Device type: Slave (upon request also available as a Master Device). |
| Measuring Ranges | Temperature: -40°C to +125°C Humidity: 0 – 100 % VOC (optional): 1 – 500 VOC index points; Ethanol in clean air: 0 – 1000 ppm |
| Sensor Accuracy | Temperature: average ±0.2 °C (at 0 – 60°C); Humidity: ±1.8 % (10%-90% at 25°C) Air Quality: – device to device variation: VOC Index Points < ± 15% – repeatability: VOC Index Points < ± 5% |
| Operating Range | Temperature: -40°C to +°85°C Humidity: 0% – 80% |
| Display | LCD Display size 3.5” with capacitive touch screen |
| Connections | Push-in CAGE CLAMP 0.2 – 0.75mm2 |
| Power Supply Cable | Screened, twin twisted pair 0.75mm to 1mm. Screen earthed at controller end only. |
| Communication Cable | Twisted pair with drain wire and foil wrap or equivalent. Must Be suitable for RS485 Standard. |
| Ingress Protection | IP20 according to EN 60529 |
| Product dimensions | 98 mm × 98 mm × 14 mm |
| Product weight | 150 g |
| Country of origin | Slovenia, EU |
| Warranty | 1 year |
Other Variants of Alledio OEM Thermostat
| Product Code ALL-RT-[…] | Fan Speed Relays | Analog Output | Digital Output | Heating / Cooling Relay | External NTC temperature sensor | Casing Color |
| ALL-TA-W (/B) | 1,2,3, auto, off | 2 × | 1 × | White / Black | ||
| ALL-TD-W (/B) | 1,2,3, auto, off | 2 × | 1 × | White / Black | ||
| ALL-TAD-W (/B) | 1,2,3, auto, off | 1 × | 1 × | ● | 1 × | White / Black |
| ALL-THC-W (/B) | 1,2,3, auto, off | 2 × | 1 × | White / Black | ||
| ALL-T-[custom] | 1,2,3, auto, off | ● | ● | ● | 1 × | White / Black |
Color Variations
White
Silver (plastic or aluminium)
Black
Device Size
Datasheet ALL-T-[…] – Alledio Thermostat
OEM Version of the Modbus Thermostat with Fan Speed Relays
The Alledio Thermostat is fundamentally an OEM solution, engineered to provide maximum flexibility and adaptability for HVAC equipment manufacturers. Our core commitment is to deliver a fully tailored solution that aligns with your specific product requirements and brand identity. We offer a wide spectrum of customizations, from minor firmware tweaks to comprehensive hardware redesigns. This ensures the thermostat not only meets your technical standards but also integrates seamlessly into your existing product lineup, providing a consistent user experience for your customers.
A key area of customization is the hardware and I/O configuration. The thermostat is “Made to Fit,” with various models offering different combinations of inputs and outputs to suit any application. Clients can select configurations that include multiple 0-10V analog outputs (AO), digital outputs (DO), or dedicated relays for heating and cooling. This allows you to tailor the unit’s capabilities precisely to the needs of your equipment, whether it’s a fan coil unit, an air handling unit, or another local HVAC system requiring relay-based control.
Furthermore, the firmware and connectivity are highly adaptable to meet your unique integration needs. We can modify the firmware to support your proprietary communication protocols, ensuring flawless operation within your ecosystem. While the thermostat comes standard with Modbus RTU (configurable as Client or Server), WiFi for OTA updates and cloud integration via MQTT, and Bluetooth, its open architecture is designed for deep customization. This flexibility guarantees that the Alledio Thermostat functions as a native component of your system, enhancing your products with advanced, connected, and reliable control technology.
Alledio by Andivi
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