The unit is run by two different power systems:
1.The Tire Gauge is operated by a CR2032 3V Lithium battery, Included. The Flashlight is operated by 2AAA 1.5V batteries, not included.
2.There are two battery compartments in the back of the unit. The big one is for 2AAA 1.5V batteries. The small one is for 3V Lithium battery.
1. Press the switch with "Gauge" mark to turn on the Gauge. When the LCD screen shows "0.0" it means ready to measure the tire pressure.
2. Place the nozzle of the Gauge to the valve stem of the tire and hold tightly for one second, the remove the Gauge from the tire you will read the accurate tire pressure from the LCD.
3. When complete the measuring, you may turn off the switch by holding it for 2 seconds or leave it to be Auto shut-off. The Auto shut-off time is 30 or 90 seconds.
How to use?
Press the button and select PSI or BAR setting.
Place the nozzle of the gauge over the tire valve. Press firmly to ensure good seal and prevent air escaping.
Hold gauge on the valve until the reading on the LCD display locks.
Remove the gauge quickly from the valve an read pressure.
To retake the reading simply place the nozzle over the tire valve again and repeat.
Gauge will automatically shut off 30 to 90 seconds after use.
Gauge can be manually turned off by holding the button down for more than 3 seconds.
1 X Digital Tire Gauge