... series Digital meter for voltage/current(AC 0-5V,4-20mA,0-10V,0-100mV,Rt,Pt100,Tc,etc ... and DC. eg, AV600/AA5, DC80/DA4; configurable by software..2) Application: signal input can select data or ... act as electrical ruler.3) Output: up to 4 alarm output, UPPER/LOW or betweens can be setted ... freely. isolate analoge output:0-10mA/4-20mA, configurable by software.4) Power supply: +12V or 24V/30mA, ...