testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor, connection hose, 3 x AA batteries, USB cable and certificate of conformity, Vane probe 100 mm with Bluetooth including temperature sensor consisting of 100 mm vane probe head, handle adapter and Bluetooth handle; bracket for testovent measurement funnel; 4 x AA batteries and Hot wire probe head 9 mm including temperature and humidity sensor, Extendable telescope up to 1 m in length for air velocity probes with a universal handle including 90Deg angle and Multi-case for testo 440 and multiple probes 0516 4401
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