Of course , customer can request open the coin control function when make order , another , this machine can extend to become a double - screen karaoke machine use for ktv with mouse and keyboard operating , all accept oem order 达到专业水准，可以根据客户要求开放投币功能，可按客户要求扩展为双屏点唱机支持鼠标键盘，接受订单
Control output has two kinds : each channel unite alarm transmit output ; each channel respectively independent alarm transmit output . unite alarm type again classified into : alarm memory and alarm no memory type 显示方式有两种：双屏数码显示双屏数码双光柱显示控制方式：两路相互独立的继电器控制报警输出或模拟量变送输出。
3 . feedback or measuring signal input pvin : pvin signal is valve position signal sent from actuator linear analog quantity or resistance signal , or field measuring signal . pvin is universal division number switchable input 采用高亮度led数码显示和高分辨率光柱显示比例显示，显示方式有二种：双屏数码显示双屏数码双光柱显示。
Note1 : double screen display ; high screen display tri - phase total active power , scope 0 9999 . 9 ; lower screen display tri - phase total active electric energy value active power accumulation value , scope 09999999999999 注1 ：双屏显示，上屏显示三相总有功功率,范围0 9999 . 9 ;下屏显示三相总有功电能值有功功率累积值,范围0 9999999999999 。
Instrument with single screen digital display approve led is red when out of factory ; instrument with double screen digital display , main screen is approved red and assistant screen is yellow green when out of factory 带单屏数字显示的仪表，出厂默认led为红色带双屏数字显示的仪表，出厂默认主屏为红色,副屏为黄绿色光柱仪表出厂默认为红色。
Use electronic songlist to manage mtv songs , select songs by osd menu , double screen video outputs , that select songs osd menu show on moniter and mtv video display on television screen , support various popular select song ways 全中文功能菜单的电子歌单，双屏视频输出,分别在在电视屏幕上显示mtv及显示器上显示点歌菜单，支持多种流行的点歌方式。
Single phase ac active reactive power meter double screen digital display outline dimension 16080 mm switch power supply input voltage 0100 v input current 05 a active power display 2500 w , reactive power display 2500 var 单相交流有功无功功率表;双屏数字显示;外形尺寸16080开关电源供电电压输入0 100v电流输入0 5a有功显示2500w无功显示2500var 。
