Main functions
High precision A/D conversion with readability 1/60000;AC/DC power supply, with inside rechargeable 6V/1.3AH battery;Able to setup zero-tracking range;Able to setup Hi-Lo alarm function;Able to setup hold function; Able to setup counting function; Muti-range calibration;Able to setup print function, can add builtin clock; Standard RS232 communication interface with select-able baud rate and communication method