High precision A/D conversion with readability 1/30000
AC/DC power supply, with inside rechargeable 6V/4AH battery
Able to setup zero-tracking range
Able to setup Hi-Lo alarm function
Able to setup hold function
Multi-range calibration
Able to setup print function，can add bulit-in colock
Standard RS232 communication interface with selectable baud rate and communication method
