... balance mode;Discrimination mode.standby current :40MAPacking: 1pcs/boxwork temperature: -10 °C - 50 °C Encasement list Mainframe :1 Ground plate : ... is very important.,it is used frequently in Instrument adjustment, Work process.Through the press, put button, machines memory circuit to ... again after detection.Way of detectingWhen you you detecting,keep 10-15cm move above ground,don't distance a lot , ...