The Prisma HPM4X - PYR2 - STW is the premier model, equipped with a digital air pressure gauge, a stopwatch, and an infrared tire temperature sensor. It lets you record and save up to 25 stopwatch sessions, as well as 25 tire pressure and temperature checks. You can measure air pressure in PSI or BAR and temperature in Fahrenheit or Celsius. The PRESSURE SHOT function automatically saves HOT tire pressures without any button - presses. It features a high - accuracy infrared sensor with 0.5°C temperature accuracy, a 380°C object temperature range, and a 35° field of view. You can measure and save AIR and TRACK temperatures, along with 12 points of tire temperature for each set. Also, in the PRESSURE mode, you can save both COLD and HOT tire pressures. Moreover, it allows you to time 4 drivers simultaneously, with 9 split times for each driver and lap statistics.
Using this product is easy. First, turn it on. To measure tire pressure, simply attach the gauge to the tire valve. You can choose to measure in PSI or BAR. For temperature measurement, point the infrared sensor at the tire. The sensor has a 35° field of view, so aim it properly. To use the stopwatch, start the timing when needed and you can record up to 25 sets of stopwatch data. When you activate the PRESSURE SHOT function, the gauge will automatically save the HOT tire pressures. Just remember to keep the sensor clean for accurate temperature readings. Avoid dropping the gauge as it may damage the internal components. Store it in a dry place when not in use to prevent moisture damage. Also, don't expose it to extreme temperatures as it might affect its performance.
