Loop resistance tester 1.high precision, small volume, light weight 2.LCD display 3.strong anti-interference ability HCHL Loop resistance testerProduct overview: Loop resistance tester is an special test instrument use to test contact resistance of High,low pressure switch, cable and weld.Technical indicators:Rated parameters HCHL-100AHCHL-200ATest range 1~1999mWResolution 1mWTest current DC ...