卖DC0-100V 10A 50A 100A LED直流雙顯示數字電流電壓表 數字表頭最好的价格

註意事項： 1.量程為50A或100A的表頭壹定要接上分流器才能上電，否則會燒壞。 2.此款表頭供電範圍是4~30V（超出範圍會燒壞），測量範圍是0~100V。 產品簡介： 1、本電壓表使用三位0.56英寸的LED數碼管顯示，半封閉無後蓋ABS塑料外殼，超薄厚度、外形小巧、價格低廉、性能穩定、顯示效果好。This voltmeter uses 0.56inch LED digital tube and partially closed ABS plastic casing without rear cover. The voltmeter is super thin with small shape and low price and stable performances. It can display well. 2、本電壓表測量範圍寬，可達DC0-100V；工作電源需由外部提供，電壓範圍為DC4.5-30V，有接反保護。This voltmeter's measurement range is wide，it's DC0-100V. It need outer working power supply and the voltage is DC4.5-30V. There is protection when the wires aren’t correctly connected. 3、本電壓表的顯示分辨率固定為0.1V。This voltmeter's display resolution is 0.1V. 4、本電壓表適合自帶直流電源的用戶，以節省成本；或者需要從0V開始測量的場合。This voltmeter is suitable for clients who has DC power supply，because this can save cost. And it can be used when the voltage need to be measured from 0V. 註意事項： 1、本電壓表測量範圍為0-100V，該電壓只是測量信號，不能作為電壓表的工作電源。所以本電壓表需要由外部提供4.5-30V的直流電壓作為工作電源。三根線中，黑線是公共負極，白線接測量電壓正極，紅線接工作電源正極，表內共負。This voltmeter's measurement range is 0-100V，this voltage is just measurement signal and it can't be regarded as voltmeter's working power supply. This voltmeter need outer working power supply which can supply DC4.5-30V as working power supply. About three wires，the black wire is communal negative pole，the white wire is connected to measuring voltage's positive pole，the red wire is connect to working power supply's positive pole，the measuring circuit and power circuit's negative pole are communal. 2、本電壓表的工作電源電壓為4.5-30V，30V是最高使用極限，請註意給表留足夠的余量，避免因電壓火花、電源紋波或其它過高突變電壓對電壓表造成永久損壞。The voltage of this voltmeter's working power supply is 4.5-30V，30V is the voltmeter’s maximum operating limited voltage，please leave enough margin when working，to avoid voltmeter’s permanent damage because of electrical spark，power supply ripple，or other too high abrupt change of voltage. 3、本電壓表未做防潮、防水防震、防油汙處理，使用時請註意。This voltmeter didn’t do moisture-proof、waterproof、shockproof，anti-oil processing，please be careful or handle by yourself when using. 技術參數： 寶貝描述： ● 高精度，高可靠性，適用高端應用場合 ● 具有反接保護，接反不燒。 10A電壓電流表頭本身內置分流器了，50A/100A電壓電流表頭需要另外購買（以上選項可以勾選購買 ）分流器（註意在接電源之前必須先接分流器）