def __init__(self):
global _node_db
_node_db = RF_Node_DB()
global sensor_node_db
sensor_node_db = _node_db.sensor_node_db
self.rwq_object = RF_Display_Queue()
self.speech_object = RF_Speech_Queue()
self.sensorlist_object = RF_SensorList_Queue()
self.MAC = 'mac'
self.MESG_TYPE = [
'SENSOR_JOINED', 'SENSOR_LOCATION', 'ALERT', 'SENSOR_DISCONNECTED'
]
self.ALERT_TYPE = ['Motion', 'Vibration']
