CURRENT METER MT4W BRAND: AUTONICS INPUT: DC VOLTAGE, DC CURRENT, AC VOLTAGE, AC CURRENT; OUTPUT: RS485 COOMUNICATION OUTPUT, LOW SPEED SERIAL OUTPUT TRNASMISSION (DC4-20MA) OUTPUT, BCD DYNAMIC OUPTU NPN/PNP OPEN COLLECTOR OUTPUT, RELAY OUTPUT; MAXIMUM ALLOWED INPUT: 500VVDC, 500VAC, DC5A, AC5A; HIGH/LOW LIMIT DISPLAY SCALE FUNCTION; AC FREQUENCY MEASURMENT (RANGE: 0.1 TO 9999HZ; VARIOUS FUNCTIONS: MONITORING PEAK DISPLAY VALUE FUNCTION, DISPLAY CYCLE DELAY FUNCTION, ZERO ADJUSTMENT FUNCTION. HIGH DISPLAY CORRECTION FUCNTION,TRANSMISSION (DC4-20MA) OUTPUT SCALE FUNCTION ETC.; POWER SUPPLY: 12-14VDC, 100-240VAC 50/60HZ ORDERING INFOMRATION: MT4W-AA-4N