Power Jack

Power Jack of the EM100-EV accepts "large" power connectors with 5.5mm diameter. Use ARP-1014 , ARP-1015A , or  ARP-1018A power adaptor supplied by Tibbo or similar adaptor. Nominal voltage is 12VDC and adaptor current rating should be at least 500mA. On the power jack, the ground is "on the outside", as shown on the figure below.