dc 4 5v 30 0v voltmeter head

{"cid":"91219651","title":"Two-Cable LED Digital Voltmeter Head 0.36-Inch LCD Display DC4.5V-30.0V Range Reverse Connection Electronic Components","imgUrl":"https:\/\/img.chinax.com\/nimg\/95\/05\/5ecdf48d6bb3cbecf547db4f9fee-200x200-1.jpg","attrs":{"Brand Name":"creatall","Model Number":"0.36 inch","Minimum Order Quantity":"100","Working current":"red <15mA, green <12mA, blue <10mA","Place of Origin":"Guangdong, China","Measuring range":"4.5-30V","Functional Application":"Voltmeter","Display color":"red, green, blue optional","Mounting Type":"standard","Power supply range":"4.5-30V","Lead length":"20cm","Input impedance":">100K ohm","Allowable error":"\u00b11%","Minimum start up":"4.5V","Refresh speed":"about 300mS\/time","Display mode":"three-digit \"0.56\" LED digital tube"}}

{"cid":"91225802","title":"0.56-Inch LED Digital Voltmeter Two-Wire DC4.5V-30.0V Range Reverse Connection Protection IP65 Rated Accuracy Class 2.5","imgUrl":"https:\/\/img.chinax.com\/nimg\/6e\/8d\/c60741126dd7d454afb56f9d7d6d-200x200-1.jpg","attrs":{"Price":"$0.52 \/ piece","Brand Name":"Yixingmicro","Model Number":"0.56inch voltmeter","Minimum Order Quantity":"10 pieces","Application":"Industrial","Display Type":"Digital Only","Max. DC Current":"10a","Material":"Abs","IP Level":"Ip65","Place of Origin":"Guangdong, China","Max. AC Current":"10a","Parameters Measured":"Dc","Power Source":"DC","Max. DC Voltage":"30v","Dimensions":"48 x 29 x 22 mm(1.89x1.14x0.87in)","Insulation Resistance":"1000 M\u03a9","Max. Ac Voltage":"30v","Operating Temperature":"-20\u2103~65\u2103","Phase":"Single","Accuracy Class":"2.5","Feature":"Digital display","Measuring Range":"4.5-30v","Type":"Digital voltmeter"}}