Cebek I-9 is a single relay which can be operated by switches or contacts. The module can be configured in one of two operating modes. 1/ The relay is 'on' when the switch is pressed and when the same switched is pressed again the relay goes 'off'. 2/ Using two switches the relay is 'on' when the first switch is operated and is only turned 'off' when the second switch is operated. The relay has an LED to indicate the condition of the output.