led DC digital voltmeter 1. 0.56 inch led 2. 5 Vdc power supply 3. Scale ranges 0~+/-600 V 4. Scale range custom available 3 1/2 digit panel mounted LED digital voltmeterThere are two basic scale ranges 0.2V & 2.0V for this meter, it is also able to be extended to measure 0~±600V DC voltage and even DC 0~±2 Amp; Moreover, it can be customed to display correlative value with sensor application; ...