Oceasoft Emerald Bluetooth Temperature Datalogger Wireless Sensor Brand new in box. The OCEASOFT Emerald is a Bluetooth-enabled wireless temperature data logger designed for cold chain monitoring. It offers two variations: one with an internal sensor for -40 to +85°C and another with an external sensor for -200 to +200°C. The Emerald records temperature readings and stores them in internal memory, accessible wirelessly via Bluetoo
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