... 3.7V phone lithium battery-powered, use DC5V/1A USB interface AC adapter charging 9.Outdoor camera powered DC5V/1A 3.5DC ... , press the “Call “key, enter the intercom state, pressing “unlock” button can wireless remote the outdoor to unlock, after the end of the call, press the “Call ... power, you need to plug in a USB charger to charge,the symbol will display the full grid on behalf of charging completed ...