def power_on(self, interval=200):
        """230v power on"""
        if self.__power_on_port is None:
            cij.err("cij.usb.relay: Invalid USB_RELAY_POWER_ON")
            return 1

        return self.__press(self.__power_on_port, interval=interval)
def power_on(self, interval=200):
        
        if self.__power_on_port is None:
            cij.err("cij.usb.relay: Invalid USB_RELAY_POWER_ON")
            return 1

        return self.__press(self.__power_on_port, interval=interval)
def power_on ( self , interval = 200 ) : if self . __power_on_port is None : cij . err ( "cij.usb.relay: Invalid USB_RELAY_POWER_ON" ) return 1 return self . __press ( self . __power_on_port , interval = interval )
230v power on
230v power on