COEUS Mini Real-time Temperature Data Logger: Enhancing HVAC System Monitoring with Precise Monitoring and Intelligent Connectivity


HVAC systems are central to indoor environmental control in commercial and industrial facilities. Unstable temperature and humidity not only affect comfort but also reduce system efficiency and waste energy. Traditional manual monitoring is inefficient and slow to respond, while bulky monitoring systems are inflexible and difficult to apply to critical locations in confined spaces or complex HVAC systems. Freshliance's COEUS mini real-time temperature data logger is designed to address these pain points, enhancing HVAC system monitoring with precise monitoring and intelligent connectivity.

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The COEUS mini real-time temperature data logger is compact, measuring only 93mm*63mm*30.2mm, making it easy to install in HVAC systems, even inside ducts or in narrow ventilation spaces. An optional external probe is also available for use in confined spaces where the main unit cannot be installed, easily extending to narrow ducts, insulated walls, or around sensitive HVAC components. A backlit LCD screen displays readings intuitively for quick and easy parameter viewing.

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As a real-time environmental data logger, the COEUS Mini real-time temperature data logger supports multi-mode connectivity (4G/WiFi/LAN) and 24/7 cloud monitoring. With our dedicated app and cloud platform, HVAC technicians and engineers can reliably track environmental data from HVAC systems of all sizes via their mobile phones and computers without needing to be physically present on-site. More importantly, we offer API services to seamlessly integrate cloud data into your own HVAC management system.


This wireless temperature data sensor, with its flexible 4G/WiFi/LAN connectivity, perfectly adapts to various building network environments, enabling stable real-time data transmission to the cloud. When any data anomalies occur in the HVAC system, the system will immediately issue notifications, including on-site audible and visual alarms, as well as cloud-based SMS, email, and app push notifications, ensuring all relevant personnel receive timely notifications and effectively preventing HVAC system malfunctions.


Uninterrupted operation is ensured by a USB-C main power supply and a backup power of 3 AA batteries (with a battery life of up to 1 month), preventing data loss during power outages.