Temperature monitor for outdoor use and industrial environments with logging function: The Mobeye ThermoGuard Twinlog CML4275 is a specialized device for temperature monitoring, logging, remote control, and alerting. Due to its robust IP66 housing, the product is particularly suitable for use in industrial or outdoor settings. The digital temperature sensor continuously monitors the user-defined temperature limits (-35 to +70 °C). When these thresholds are exceeded or not met, the communication module alerts the pre-set recipients via push notification, SMS, call, or email – the built-in siren can also provide local warning as an option. With a selectable measurement interval, the CML4275 continuously records the measured temperatures and automatically synchronizes this data with the Mobeye Internet Portal. The sent data is logged and displayed graphically there. The Mobeye ThermoGuard Twinlog CML4275 can be powered by batteries, lasting over a year with normal use. Normal use means that the stored log values are transmitted to the portal once a day. For all users who require hourly transmission of the logged values to the portal, the use of an external power source (12V DC or mains voltage) is essential. In the event of an external power failure, the device sends an additional "power outage" notification. The module also features an open collector output and two NO/NC inputs. This allows the module to monitor even more by connecting external sensors, such as the operation of systems or the opening of boxes. The CML4275 is particularly suitable for professional temperature monitoring, especially because it enables external logging and alerting.