it does NOT work on 1S….there is not enough power to run the monitor at low battery voltage and therefore completely
defeats its purpose…have you tested your products?
once you reach low battery on 1s like 3.3 volts the monitor does NOT function anymore.
i am guessing it is a 5V processor in it.
please respond…there was a card included in my packaging encouraging me to reach out if i have a problem.