Cebek I-57 is a 8 output sequential controller with the advantage that the outputs can be configured to run forwards or backwards, when it receives the designated pulse. There will only be one relay energised at a time , the length of time it is 'on' for can be adjusted between 1 second and 240 minutes. The time between relays operating is also adjustable between 0.3 seconds and 1 minute. The module has a reset function and uses DIL switches to alter the time settings. The option exists to connect the I-58 or I-59 modules to give you additional outputs, this could allow you to increase the system capacity up to 255 channels.