Designed for precision and convenience, the 16 mm vane probe with Bluetooth® and temperature sensor is ideal for air velocity, volume flow, and air temperature measurements in ventilation ducts. With a measuring range of +0.6 to +50 m/s and maximum accuracy from 5 m/s, it enables precise diagnostics across various flow conditions. The built-in telescope extends up to 1.0 m, and can be optionally lengthened to 2.0 m using an additional extension (sold separately) for reaching high or distant ductwork. Data is wirelessly transmitted to your compatible Testo multifunction instrument (order separately), and the smart button on the handle simplifies data logging during spot or continuous measurements. Testo’s intelligent calibration concept ensures minimal downtime, as only the probe needs to be sent in for calibration.