Scolia Pro System - Automatic Electronic Scoring with built-in light. Robust and durable – the Pro is ideal for pubs, bars, darts clubs, for professional or highly enthusiastic players who will also definitely benefit from the ultra-high accuracy. With the Scolia app, you can play with friends or challenge any other user worldwide. Requirements: • standard steel tip board with white number ring • dartboard surround • 107 x 110cm around the board on a flat, solid wall with a minimum ceiling height of 227cm • Wired Internet connection. Supplied with a UK power adaptor only.