DIGITEN DC 24V 4 Digit Digital LED Counter Panel Meter Up and Down Totalizer 0-9999 Blue<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Power supply:DC11V-35V(better 24V)</li><li>Input Signal:Pulse or switch</li><li>Display dimension: 0.56" blue</li><li>Display range:0-9999</li><li>Counting value be retained when power failure.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41c0QGYGP2L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51LLBQnc3FL.jpg" noproxy>