The InTemp ® CX403 data logger features an internal sensor for monitoring ambient temperature. The logger communicates wirelessly via Bluetooth Low Energy to mobile devices. The CX403 features a built-in LCD display to view ambient temperature, advanced audible and visual alarm capabilities for notification of temperature excursions, and a NIST Certification of Calibration. With the optional CX Gateway, you can get remote notifications of temperature excursions and automatically download data from loggers within range of the device.