ZNHL series circuit resistance tester adopts high power of switching power supply  technology and advanced electronic circuit. It is dedicated test instrument for high/low switch, cable and wire, joint contact resistance. It meet national standards and test resistance under standard current. The instrument is small size,light weight, strong anti-interference, high precision, easy operation, perfect protection function and so on.

• 320×240 LCD, high speed thermal printer.
• Small size, light weight, strong anti-interference, high precision, easy operation, perfect protection function.
• New power supply technology, long time output big current, and many current gears.
• High pricise OPA and A/D converter,16 bits IC, auto switch amplifing factor.
• Real-time calender design for data time record. 
• 1000 sets data storage, historical data look up, crash-proof function.
• Kind interface, intelligent working process.
• RS232 port, communication with upper software.