The Testo 550s Manifold Gauge Set is a high-quality digital manifold designed for use in refrigeration and air conditioning systems. With a pressure resolution of 0.14 psi / 0.01 bar and an accuracy of ±0.5% FS, this manifold provides precise measurements for pressure and temperature. The system requirements include a mobile end device with Bluetooth 4.0, iOS 11.0 or newer, and Android 6.0 or newer. The set also includes clamp temperature probes and has a measurement range of -58° to 302 °F / -50 to +150 °C. With its compact dimensions and durable housing, the Testo 550s is a reliable tool for HVAC professionals. Used with marks scratches perfect working order Many thanks
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