The TASI TA623 Series Large Display Thermo-Hygrometer is a high-precision temperature and humidity monitoring instrument designed for fixed environmental monitoring applications. Also known as a digital thermo-hygrometer, temperature humidity monitor, environmental temperature and humidity meter, humidity detector, or industrial climate monitoring device, the series includes TA623A with a built-in sensor and TA623B with a 5m external probe. It provides real-time measurement of ambient temperature and relative humidity, making it ideal for pharmaceutical warehouses, food storage rooms, laboratories, archives, server rooms, data centers, manufacturing workshops, greenhouses, cleanrooms, and HVAC system monitoring. Featuring a dual-channel large LCD display, the TA623 Series clearly displays temperature and humidity readings simultaneously for quick environmental assessment. Users can set customized upper and lower alarm limits, and the device provides audible, visual, and LED alerts when measured values exceed preset ranges. This helps operators take timely actions such as ventilation, cooling, humidification, or dehumidification, effectively reducing risks caused by excessive humidity, overheating, condensation, material damage, and product quality issues. The TA623A built-in sensor model is suitable for conventional indoor monitoring applications such as offices, warehouses, laboratories, equipment rooms, and control rooms. The TA623B external probe model features a 5-meter cable probe, allowing users to measure temperature and humidity in hard-to-reach areas including cold storage rooms, pipelines, equipment interiors, sealed containers, and industrial process environments. Supporting wall mounting, magnetic mounting, and tripod installation, the TA623 Series adapts to various installation requirements. With stable Type-C DC power supply, it supports long-term 24/7 continuous monitoring. Additional features include ℃/℉ unit switching, memory retention of alarm settings, and fast stable sampling performance. With its large display, intelligent alarm function, flexible installation options, and reliable monitoring capability, the TA623 Series temperature and humidity monitor is widely used in industrial manufacturing, logistics storage, healthcare facilities, food processing, agriculture, building inspection, and equipment maintenance applications.