Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed We ship to US territories and worldwide. Please contact us if you have any special shipping instructions. Recharge Kit, Digital Manifold Gauges HVAC Pressure Air Tightness Test, Air Conditioning Tools Equipment with Tricolor Hose, for Cold Storages/Refrigerators Specification Item model number NO Brand DUOYI Material Glass, Plastic Package Dimensions 11.3 x 10.75 x 4.21 inches; 6.22 Pounds Manufacturer DUOYI 10.75 inches x 11.3 inches x 4.21 inches. Weight: 6.22 lb ?Multi-Function Intelligent Digital Manifold Gauge Set?Our digital HVAC manifold gauge set is versatile and has features such as refrigerant filling, dual pressure testing, vacuuming, air tightness testing, multi-unit switching, multi-mode functions, and built-in refrigerant database, suitable for air-conditioning installation and maintenance, daily maintenance of refrigerators, daily inspection of cold storage and automobile air-conditioning maintenance, etc ?Built-In 92 Types Of Refrigerant Data 32-Bit Digital Processing Unit?Digital gauges hvac built-in 92 kinds of refrigerant pressure-evaporation temperature database, and you can switch or fill different types of refrigerants as needed, which is suitable for a variety of maintenance occasion. Built-in 32-bit digital processing unit and high-precision data acquisition unit, with high data and high stability characteristics, making the pressure data measurement more stable and accurate ?Dual Pressure Test Condensation/Evaporation Temp Display?During the refrigerant filling process,digital gauges hvac will automatically calculate the pressure value of the refrigerant in the low-pressure pipe(condensation pressure) and the pressure value of the high-pressure pipe(evaporation pressure).At the same time,the corresponding condensation/evaporation temperature will be calculated and displayed to provide a reliable basis for judging the operating status of the refrigeration system ?Vacuuming Pressure Leak/Air Tightness Test?Manifold gauge can be connected to a vacuum pump to perform vacuuming on the refrigeration system. When the vacuum reaches about 90% and will not continue to rise, the vacuuming is completed. After the vacuuming is completed, the mode can be adjusted to the leakage test state. By observing the pressure difference, it can be judged whether there is any leakage in the refrigeration system pipeline, and the duration of the leak test can be recorded ?Visualization Window Observation Multi-Unit Switching Hook Design?Refrigeration gauges are designed with a visual window to keep an eye on the refrigerant filling status. During the pressure test and temperature test, you can freely switch between pressure units and temperature units, including kPa, MPa, bar, inHg, PSI, and temperature unit switching between Celsius/Fahrenheit. The hook design of the hvac gauges allows you to perform the test and other operations with ease and effort ?High-strength engineering plastics 1/4-inch standard interface TFT LCD display?Digital hvac manifold gauge set is made of high-strength engineering plastic, the whole machine is solid and comfortable to hold. It uses a large-size TFT liquid crystal display and supports backlight display, making it easy to read data even in dimly lit or dark environments. 1/4-inch standard interface design ensures the durability and versatility of the instrument ?3-Year Warranty? Our hvac digital gauges has a three-year warranty. HVAC manifold gauge set package includes: 1*main unit; 1*bottle opener; 1*valve core wrench; 2*Quick connector; 3*1.5 meters Three-color hose; 4* seals fittings; 3pcs 1.5V batteries; 1* suitcase; 1* instruction manual. If you have any questions during the use of digital manifold gauge set, please feel free to contact us Product description SHIPPING . We ship to US territories and worldwide. Please contact us if you have any special shipping instructions. Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? 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