... certificate OEM services availableMore information, please kindly view our web site: http://www.etcr.cc/en/Online store: http:// ... Wire resistance verification, Data upload with RS232, Alarm function, Software monitoring, Data memory: 400 sets, Resistance range: 0. ... to ground: measuring below AC 600VRS232 InterfacePossess RS232 interface, software supervision, storage data can be uploaded to computer, ...