Testo 552i, App Controlled Wireless Vacuum ProbeCondition:* New Surplus Stock, No OEM Packaging. As Pictured.Additional Notes:* Identify vacuum quickly and easily by means of the graphical display in the App or on the digital manifold screen* Connects automatically via Bluetooth to the testo Smart App and digital manifolds* Exceptionally compact and reliable thanks to the rugged, easy-to-handle housing with IP 54 protection class* Easy installation at any service port thanks to the integrated 45 angle* Uses 3 x AAA BatteriesTesto 552i