Refresh Rate?about 500mS/times Display:Three 0.28 " LED digital tube Display Color:RED Operating Temperature:-10 °c ~ +65 °c Power supply same Source,self-Power Current consumption: generally 5-15mA, less than 20mA Reversal protection:Have
Wiring: Red: Power Supply +,Measure Voltage +,(2.50~ 30V DC) Black: Power Supply -, Measure Voltage -
Package Include: 1x Digital Voltmeter Panel
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