ATO Inputs

Introduction:

 * The Reef Angel comes with 2 input ports as standard.
 * They are used for ATO setups in the standard configuration
 * C an be used for other purposes should you wish ie. connect buttons, floor sensors, flow meters or simple switches.
 * Should you need more, you can add an IOExpansion

ATOHigh and ATOLow:

 * Called as ATOHigh
 * Called as ATOLow