3in1 12V DC Outlet Splitter Cigarette Lighter Socket Adapter with Touch Sensing Switches RS-21S

The four touch sensing power switches allow you to turn/off the power for each of the three extended outlets or USB ports with touch of a finger.
The screen displays battery voltage, USB output current, timing and temperature and you can alternate through the four modes either manually or automatically.
Adjustable brightness allows you to choose between 9 levels of brightness for the backlighting of the touch switches.
You can shut on and off the entire device and configure Function 1-6 by using the mechanical master power switch;
Power-on Delay allows you to set the length of time for 1-30 secs between the moment the device is connected to the power supply and the moment it really switches on, to protect your attached appliances from the effect of voltage surges during the engine startup.
If your vehicle comes with an “always on” type of cigarette lighter socket, the Auto Power-off feature allows you to specify the length of time for 1-120 minutes until the device will automatically power off after the engine shuts off to prevent the battery from being drained (Battery Discharge Prevention)
With the high-precision external temp sensor cable attached, it can display temperature readings with the accuracy of ±5℃.