The new valve caps are screwed and secured with a nut.
(Supplied key, best place in the ashtray or so, you should go to refill air times or so)
The receiver is plugged into the cigarette lighter. Done. The part now shows the pressure of all four tires at the same time. When the wheels ummontieren replace just the sensors on winter / summer, are only screwed. Wonderful.
Small drawback: readability in the sun not so great and you can not adjust the print area for the beeping warnings, the fix is at 1.7 for low pressure and 3.4 or 3.5 for overpressure. Anyone who drives a van or XL tires can here might prefer to look for another product to our Caddy (2.8 bar XL tires) the thing is wonderful and beeps as hoped at low or high pressure. The display (or the whole receiver, not entirely clear) turns on when the car stopped after a while. If the cigarette lighter therefore have continuous current, no problem. From a speed of about 20 km / h The switch on again.
CONCLUSION: I will buy again for our other cars the same part!