Specifications: Recommended input voltage: 9-12v Min-max input voltage: 9-18v 5 mm standard dc plug-in jack for power supply On-board 5v regulator (lm7805) circuit. On-board power supply on-off switch Power status led(red) Port extensions for all ports with detailed pin labeling for easy identification of pins. 12v, 5v and grd bus provided for external peripheral. High quality fr-4(1.6 mm) PCB Four 3mm mounting hole for easy mounting
