QWORK® Battery Monitor Voltmeter Ammeter, Voltage Range 8V-80V and up to 500A, Voltage Current Meter with 13 ft Custom Cable

Can the flashing screen be turned off when charging?

Unit appears to go to sleep mode, meaning there is no display at all with voltage applied. button press turns on the device then works ok. Fix for it?

Does it display 1/10, 1/100 or 1/1000 of a volt?

how long has anyone extended their display cable