latest version is Green board Input interface / output interface: 100A large current occluding screw column Voltage measurement range: 0.00V~200V resolution accuracy: 0.01V Current measurement range: 0.00A~20A resolution accuracy: 0.01A Capacity accumulation range: 0~999.999Ah resolution accuracy: 0.01Ah Cumulative power range: 0~9999.9Wh resolution accuracy: 0.01Wh Power measurement range: 0000.00~150/180 W resolution accuracy: 0.01W Impedance measurement range: 1~999.9, European resolution accuracy: 0.01 Euro Temperature measurement range: 0~99 degrees Celsius, 0~99 degrees Celsius, resolution accuracy: 1 degrees Celsius Maximum time: 999 hours, 59 minutes, 59 seconds, resolution accuracy: 1 second Timing measurement reminder settings: countdown, 24 hours arbitrary settings Small current standby warning threshold parameters and timing: 0.5W began clocking The DC voltage of the 4~30V range supplies power to the measuring system Refresh time: >500mS/ times > 500mS/ times Measuring speed: about 0.5 times per second Overvoltage and overcurrent setting alarm mode: display alarm interface to remind users Overpreure warning setting: 1~200V Low voltage reminder setting: 0~190V Overflow reminder setting: 0.2~100A Display type: micro power LCD module, LCM black font, green backlit Chinese and English display Product size: 156mm*96mm*58mm Operating temperature: -10~+60 degrees Celsius, -10~+60 degrees Celsius Working humidity: 10~80 (no doubt) 10~80 (no doubt) Working preure: 80~106kPa