HY, yesterday i bought one hcigar vti200. for the moment i don´t have atomizers. please, i have one question. when the mod is in sleep mode, if i press the button fire, the mod will not turn on. when i connect the usb cable, the mod turn on. i worked with escribe without any problems. probably it´s a characteristic of the circuit. So my question: the mod turn on only with the atomizer mounted in the mod? thank you for your help Aldo