Monitor your exhaust gas temperature and set a custom warning level. The kit is easy to install as the sensor mounts in your engine bay and simply has a cable that runs to the gauge. It is important to monitor your exhaust gas temperatures especially when towing as these give vital information to the heat generated by the engine and the current stress put on it.   Assembly Instructions: 1. Connect the Part 1 and Part 2, give it 12V. 2. On the Part 1 have two Button. 3. Press on a button the LED will twinkle. 4. Now you can press the two button set the alarm number. 5. Left button is down the right button is up. 6. Set the alarm number what you want wait for 5 seconds the gauge will keep the set.   Item Name: Car Exhaust Temp Gauge Material: ABS, Electronic Components Booster: -14PSI to 140PSI Exhaust Temperature: 0-11000 Degree Celsius Water Temperature Gauge: 0-1100 Degree Celsius Oil Pressure Gauge: 0-18 BAR Size: 4.8cm x 3.2cm/1.89" x 1.26" (Approx.) Cable Length: 90cm/35.43" (Approx.)   Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.   Package Includes: 1 x Car Exhaust Temp Gauge Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!