A defining strength of the RC-4 is its informative LCD screen, which shows the current temperature, the time, over-temperature alarm status, configured upper and lower limits, and the recorded maximum and minimum values. This at-a-glance visibility lets operators and receiving staff confirm conditions instantly, while the built-in buzzer provides an immediate audible warning when temperatures drift outside the safe range, allowing corrective action before products are compromised.

The logger supports an internal sensor plus an optional external temperature sensor, adding versatility for different monitoring scenarios. The internal sensor measures from -30 C to +60 C, while the external sensor extends the range to -40 C to +85 C, enabling precise measurement inside refrigerators, freezers, packaging or product simulators rather than only the surrounding air. With +/-0.5 C accuracy between -20 C and +40 C (1 C elsewhere) and 0.1 C resolution, the RC-4 provides trustworthy data for frozen, chilled and controlled-room-temperature goods.

• Capacity and configurability are well suited to a wide range of trips and storage cycles.
• The RC-4 stores up to 16,000 data points and supports logging intervals from 10 seconds to 24 hours, so users can choose detailed short-term profiling or extended long-duration monitoring.
• Data is retrieved by connecting the logger directly to a Windows PC or Mac, where the free ElitechLog software exports complete records to PDF and Excel for archiving, analysis, reporting and sharing with customers or auditors.
• This software-light workflow keeps day-to-day operation simple and consistent.

Built for repeated use, the RC-4 is powered by a replaceable CR2450 battery that delivers more than a year of operation, lowering total cost of ownership compared with single-use devices. Its IP67 protection rating ensures dependable performance in humid, wet and demanding environments such as reefer containers, ice-pack shipments and cold rooms. The pocket-sized housing (84 x 44 x 20 mm, around 60 g) clips or sits easily inside cartons, totes and cabinets without adding bulk, and its rugged build stands up to the rigours of transport and frequent handling.

The RC-4 is widely deployed across pharmaceutical and vaccine distribution, clinical and laboratory storage, blood and biologics handling, dairy, meat, seafood and produce supply chains, frozen foods, catering and food service, and general cold-room and refrigerator monitoring. By providing clear on-device feedback and exportable digital records, it helps organisations meet Good Distribution Practice (GDP) and HACCP expectations, reduce spoilage and rejected loads, and build customer confidence through transparent, documented temperature control.

In everyday operation, the workflow is intuitive: configure the logger and limits in ElitechLog, start recording, place it with the goods or in the monitored space, and review the LCD and buzzer status during use. When it is time to download, connect the unit to a computer and export the report. Because it is reusable and battery-replaceable, the same device can serve many cycles, making it an economical foundation for continuous monitoring programmes.

Overall, the Elitech RC-4 offers an unbeatable balance of affordability, reliability and features - LCD display, buzzer alarm, internal and optional external sensors, generous memory, IP67 durability and PDF/Excel reporting - in a compact reusable package. It remains a go-to choice for businesses seeking practical, repeatable cold-chain monitoring. (Price available on request - contact us for volume pricing, external-sensor options and bulk orders suited to your operation.)