def getListTempSensors():
    dao = DAO()
    sensors = dao.getListTempSensors()
    t_list = []
    for sensor in sensors:
        t_list.append({'id_sensor': sensor.id, 'name' : sensor.name,'directory' : sensor.directory_number, 'current' : sensor.current_value, 'timestamp' : sensor.timestamp}) 
    return json.dumps(t_list)