91C4 AC current meter,dc current meter,current transmitter 1.OEM 2,High quality,reasonable price,hot sale 91C4 AC current meter,dc current meter,current transmitterThe scope ... Service condition:-20~+50°C;Relative humidity:≤85%;Resistance to pressure:when self-frequency constant value various is ... : 50uA 100uA 150uA 500uA 1mA 2mA 5mA 10mA 20mA 30mA 50mA 75mA 100mA 150mA 200mA 250mA 300mA 500mA ...