COEUS Mini Real-Time Temperature & Humidity Data Logger

Precision sensing with optional external probe support
Stable operation with external power and 3×AA battery backup
Multiple communication options: Wi-Fi, 4G, and LAN
Space-saving design with a clear, easy-to-read display
Cloud-based real-time monitoring with instant alerts
Built-in sound and light alarm functions
Optional API for seamless system integration

Introduction

The Coeus Mini Series is a compact real-time temperature humidity data logger designed for reliable environmental monitoring in critical indoor facilities. With flexible connectivity options including Wi-Fi, 4G, and LAN, the device automatically uploads monitoring data to the cloud for remote access and real-time visibility.

Ideal for environments such as freezers and refrigerators, laboratories, pharmacies, warehouses, and server rooms, the Coeus Mini wireless data logger provides instant alert notifications, on-site audible and visual alarms, and API-based system integration, helping ensure stable environmental conditions and efficient facility management.

COEUS Mini data logger installed on-site

Specifications

Device specifications

Model	Coeus Mini
Data upload network	WiFi / 4G / LAN
Built-in sensor — temperature	−20°C ~ +60°C, ±0.5°C (F.S.)
Built-in sensor — humidity	0–100% RH, ±3% RH (25°C, 20–80% RH), ±5% RH (others)
External probe	Max. one external probe optional — see probe table below
Logging interval	1 minute – 2 days
Memory capacity	120,000 readings, circular buffer
Uploading interval	1 minute – 2 days
Main power supply	USB-Type C, 5V/2A (DC)
Backup power	3×AA battery (not included)
Backup power duration	Up to 1 month (10-min upload interval)
Display	LED & LCD, 62 × 33 mm
Installation	Fixed with screws / wall mounting
Dimensions	93 × 63 × 30.2 mm
Weight	Approx. 170 g (with batteries)

Optional external probes

Probe type	Measuring range	Accuracy
Temperature probe	−30°C ~ +70°C	±0.5°C (−30°C~+50°C), ±1.0°C (others)
Temperature probe (ultra-low)	−90°C ~ +200°C	±0.3°C (−40°C~+100°C), ±0.5°C (−80°C~−40°C; +100°C~+150°C), ±1.0°C (others)
Temperature & humidity probe	−40°C ~ +85°C / 0–100% RH	±0.5°C F.S. / ±3% RH (25°C, 20–80% RH), ±5% RH (others)

Standard cable length: 2 m. Custom lengths available: 5 m, 10 m, 15 m, or 20 m.

Features

Wi-Fi / 4G / LAN Connectivity Options

Available in three dedicated hardware versions—Wi-Fi, 4G, or LAN connectivity. This allows users to select the most reliable transmission method based on their specific site conditions, whether it’s utilizing existing facility networks or bypassing IT infrastructure with a cellular (4G) solution to avoid coverage gaps.

COEUS Mini Wi-Fi, 4G, and LAN connectivity options illustration

API-ready for Diversified IoT Solutions Integration

Engineered for maximum compatibility. Seamlessly push real-time data directly to your own local servers, private clouds, or existing enterprise platforms such as ERP, WMS, and third-party IoT management systems. This ensures centralized data control and empowers you to build customized monitoring workflows within your preferred software architecture.

High-Accuracy Sensing (±0.5°C) with One Optional External Probe

Max. 2 monitoring channels, available in three probe configurations to match your specific storage needs:

Standard (−30°C to +70°C) — ideal for general cold storage, warehouses, and ambient monitoring.
Ultra-Low (−90°C to +200°C) — designed for dry ice, liquid nitrogen storage, and industrial use.
Temperature & Humidity (−40°C to +85°C / 0–100% RH) — perfect for pharmaceutical, warehouse, and cold room environments.

COEUS Mini backup power via 3 AA batteries

Continuous Power with 3×AA Battery Backup

External power adapter supports continuous operation. The three AA batteries provide backup power during emergency power interruptions.

Real-time Alerts via SMS, Email, and App Push

Provides an instantaneous safety net. Get notified immediately from FreshLink when temperature or humidity deviates from preset thresholds, enabling proactive risk mitigation and ensuring the safety of your inventory 24/7.

COEUS Mini alert notifications via SMS, email, and app

Application

The Coeus Mini real-time data logger is suitable for automated environmental monitoring.

1. Medical & Life Sciences

Ultra-Low Temperature Storage: reliable 24/7 monitoring for −80°C freezers, liquid nitrogen tanks, and biological specimen banks using external probes.
Laboratory Environments: precise tracking for incubators, clean rooms, and stability chambers to support experimental integrity and GSP/GMP compliance.
Hospital Pharmacy: automated temperature safety net for vaccine storage and medicine cabinets, with instant alerts to prevent spoilage.

2. IT Infrastructure & Critical Facilities

Data Centers & Server Rooms: monitoring ambient temperature and humidity to prevent hardware overheating and costly downtime in high-density server racks.
Network Closets & Base Stations: remote environmental management for distributed, unattended IT rooms and telecom base stations via 4G or LAN options.

3. Industrial & Specialized Storage

Automated Warehouses: seamless data integration for large-scale climate-controlled warehouses, eliminating manual checks through API-driven automated reporting.
Industrial Production: monitoring sensitive manufacturing areas where specific humidity levels are critical for product quality and material stability.

Lihat detail lebih lanjut tentang GREX IND SUPPLY

Freshliance Coeus Mini-WiFi/4G Real-Time Temperature & Humidity Data Logger