Wireless GSM and Wi-Fi Data Loggers for Humidity and Temperature use a built-in GSM or Wi-Fi modem to transmit data to a cloud server. The device operates on the principle: wake up, measure, transmit, sleep. In the absence of a connection to the operator’s tower or Wi-Fi router, the logger stores the collected humidity and temperature data in its non-volatile flash memory. GSM and Wi-Fi loggers are part of monitoring systems for indoor use and monitoring systems for transport.
A high-contrast OLED screen is used for display, showing humidity and temperature values across all measurement channels. Additionally, the display shows the signal strength, battery charge, and serial number. The data logger is supplied with a rubber boot for protection against impacts and falls and has a built-in magnetic mount. The logger features two IP67 M8 connectors to which one or two external Pt1000 thermocouples or an SHT air humidity and temperature sensor can be connected. The device also has a USB-C port for connecting a battery charger. The logger’s replaceable 18650 lithium battery can be quickly replaced by the user if necessary.
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