Check the listing for details. Testo 552i Wireless Vacuum Probe for HVAC Systems Handheld Test Probe 0564 2552. Condition: New. Listed at 139.50 USD. Wireless vacuum measurements via just one service port: The testo 552i app-controlled vacuum probe with Bluetooth enhances the Testo Smart Probes portfolio. It delivers reliable measurement results, is robust and easy to use – the vacuum probe provides optimum support for proper evacuation of refrigeration and air conditioning systems and heat pumps.Technical dataAbsolute Pressure*]:bg-warmGray-50">Measuring range0 to 26.66 mbar /0 to 20000 micron*]:bg-warmGray-50">Accuracy±(1±10 micron + 10 % of mv (100 to 1000 micron)*]:bg-warmGray-50">Resolution100 micron (2000 to 5000 micron) /1 micron (0 to 1000 micron) /10 micron (1000 to 2000 micron) /*]:bg-warmGray-50">Overloadabsolute: 6.0 bar / 87 psi(relative: 5.0 bar / 72 psi)General technical data*]:bg-warmGray-50">Weight142 g*]:bg-warmGray-50">Dimensions150 x 32 x 31 mm (LxWxH)*]:bg-warmGray-50">Operating temperature-10 to +50 °C*]:bg-warmGray-50">Protection classIP54*]:bg-warmGray-50">System requirementsrequires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.2*]:bg-warmGray-50">Product colourblack/orange*]:bg-warmGray-50">Auto-off10 min**]:bg-warmGray-50">Battery type3 AAA micro batteries*]:bg-warmGray-50">Battery life39 h*]:bg-warmGray-50">Connection7/16“ UNF*]:bg-warmGray-50">InterfaceBluetooth® 4.2*]:bg-warmGray-50">Storage temperature-20 to +50 °C* when not connected via Bluetooth