DUOYI DY522A 8-Piece Auto Repair Tools sku-1573312938

The DUOYI DY522A is an 8-piece digital manifold gauge set with 2 valves for HVAC pressure and vacuum testing at home or in a car. It supports 93 refrigerants, including R410a, and is listed under Auto Repair Tools. Its color is listed as Other; the SKU is sku-1573312938 and the UPC is 728990665800. The vacuum and pressure displays can be switched.

During refrigerant pressure testing, the gauge shows the corresponding evaporation or condensation temperature, and a window lets you watch the refrigerant fill. Selectable units include kPa, MPa, Bar, PSI, inHg, °C, and °F. The housing uses high-strength engineering plastic with flexible, non-slip silicone, and a foldable hook allows hands-free attachment.

The hose set has a burst pressure of 3000PSI. The gauge supports 4pcs 1.5V AA batteries. A 3% difference between the measured and actual temperature is allowed, and slight leakage at the valve seal will not affect daily use. Follow the operating instructions or guidance from a professional. Connect the accessories properly to the main unit before use; an incorrect connection affects operation.

After powering on the HVAC gauges, press ZERO to clear the numbers. Select Fahrenheit or Celsius before a temperature test. Use the instrument in a well-ventilated area to avoid inhaling toxic gases. Do not alter its internal circuit, and do not use or store it in areas with high temperature, high humidity, flammable or explosive materials, or strong electromagnetic fields.