Quote:
Originally Posted by Hagbard
Not just the light in some of them if the device its self is not smart the BlueTooth could still be running as well.
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Yes reading some of the reviews off amazon for the $20 cheap ones, some people have said that they were able to connect to wifi also after car was off and key out (overnight even, so not like 5 mins after). So it's more than just led on. The more expensive ones (plx kiwi Wifi 2 for eg) seem to have a sleep mode where it turns off after some inactivity. See -
"The Kiwi 2 Wifi incorporates a new advanced power saving circuit, designed to shut off power to essential functions of the unit allowing the Kiwi 2 Wifi to be permanently installed in your vehicle without draining your vehicle's battery. After 5 minutes of inactivity, the Kiwi 2 Wifi automatically enters a low power sleep mode. To turn the unit back on, a simple press of the soft switch wakes the device back up."
But the con is it seems you need to press a 'soft switch' to wake it up. At least the kiwi one. Others may have an auto wake on car start.