174 H BT (black) - Mini data logger for temperature and humidity with Bluetooth and app

The testo 174 H BT (black) mini data logger provides simultaneous temperature and relative humidity monitoring with integrated Bluetooth wireless connectivity, optimized for HVAC/R commissioning, inspection, maintenance, and indoor climate diagnostic workflows. Monitoring temperature from -4 DegF to 158 DegF (-20 DegC to +70 DegC) with a 16,000-reading per-channel capacity, this logger delivers comprehensive environmental data collection across extended measurement periods. The free testo Smart App on iOS or Android enables wireless configuration, real-time monitoring, and data readout from up to 30 meters away - making it ideal for hard-to-reach sensor locations in HVAC installations. App-based reports can be generated and exported directly from mobile devices. Automatic data backup protects against data loss during battery changes. Supplied with wall bracket and batteries.