The testo VAC Smart Probe Set provides a combination of four instruments needed to test and balance a multioutlet ventilation system. Two types of anememoters give you the capacity to measure in-duct air flow and the flow from each vent. Using an IR temperature probe for surfacetemperatures will show you motor and electrical equipment conditions and an easy check of each outlet. The thermohygrometer will provide an assessment of the humidity and dewpoint concerns throughout the system. Click here for product datasheet Key Features: Measures air velocity, temperature, relative humidity, wet bulb / dew point, and calculate volume flow Kit includes instruments to measure, balance, troubleshoot, and optimize ventilation systems performance RH & air flow measurements in-duct and at registers viewed simultaneously in the testo Smart Probes App (605i, 405i, 410i) App calculates system enthalpy with air flow & RH probes; App allows you to photograph objects with smart device, capturing measurement marker and temperature values for reference and reporting (805i) Overview Users can remotely read the measurements from multiple probes by using the testo Smart Probes App. The kit comes with a handy case at a great value.The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap!All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of timeconsuming paperwork! What's included: testo Smart Probes VAC set for servicing ventilation and air conditioning systems. Consists of: testo 405i, testo 410i, testo 605i, testo 805i, testo Smart Case (VAC), batteries, and certificate of calibration Temperature - NTC Technical data Measuring range -4° to 140 °F (testo 405i + testo 410i + testo 605i) / -20 to +60 °C (testo 405i + testo 410i + testo 605i) Accuracy ±0.9 °F (testo 405i + testo 410i) / ±0.5 °C (testo 405i + testo 410i)±1.4 °F (-4° to 32 °F) (testo 605i) / ±0.8 °C (-20 to 0 °C) (testo 605i)±0.9 °F (32° to 140 °F) (testo 605i) / ±0.5 °C (0 to +60 °C) (testo 605i) Resolution 0.1 °F (testo 405i + testo 410i + testo 605i) / 0.1 °C (testo 405i + testo 410i + testo 605i) Temperature - Infrared Technical data Measuring range -22° to 482 °F / -30 to +250 °C Accuracy 34.7 °F or ±1.5 % of mv (32° to 482 °F) / ±1.5 °C or ±1.5 % of mv (0 to +250 °C)±36 °F (-4° to 31.8 °F) / ±2 °C (-20 to -0.1 °C)±36.5 °F (-22° to -4.2 °F) / ±2.5 °C (-30 to -20.1 °C) Resolution 0.1 °F / 0.1 °C Emissivity 0.10 to 1.00 Measurement spot marking Diffractive optics (laser circle) Distance to measurment spot 10:1 Humidity - Capacitive Technical data Measuring range 0 to 100 %rH Accuracy 5 to 80 %rH: ±(1.8 %rH + 3 % of mv) at +25 °C Resolution 0.1 %rH Velocity - Hot wire anemometer Technical data Measuring range 0 to 5906 fpm / 0 to 30 m/s Accuracy ±(19.7 fpm + 5 % of mv) (0 to 394 fpm) / ±(0.1 m/s + 5 % of mv) (0 to 2 m/s)±(59.1 fpm + 5 % of mv) (394 to 2953 fpm) / ±(0.3 m/s + 5 % of mv) (2 to 15 m/s) Resolution 2.00 fpm / 0.01 m/s General technical data Technical data System requirements requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0 Warranty 2 years Battery type 3 micro batteries AAA (per Smart Probe) Battery life 15 h (testo 405i), 200 h (testo 410i), 250 h (testo 605i), 30 h (testo 805i) Storage temperature -4° to 140 °F / -20 to +60 °C Dimensions 8 x 1 x 2 in. (testo 405i) / 200 x 30 x 41 mm (testo 405i)6 x 1 x 1 in. (testo 805i) / 140 x 36 x 25 mm (testo 805i)6 x 2 x 1 in. (testo 410i) / 154 x 43 x 21 mm (testo 410i)10 x 1 x 1 in. (testo 605i) / 243 x 30 x 24 mm (testo 605i) Operating temperature -4° to 122 °F (testo 405i + testo 410i + testo 605i) / -20 to +50 °C (testo 405i + testo 410i + testo 605i)14° to 122 °F (testo 805i) / -10 to +50 °C (testo 805i) Length probe shaft extendable to 400 mm (testo 405i); 100 mm (testo 605i) Diameter vane 40 mm (testo 410i)