Server A/c Changeover Programmable Timer

We are offering server a/c changeover programmable timer etc. We are offering server a/c changeover programmable timer. server room programmable timer is a micro controller based (4 digit) timing selectable in seconds, minuets, hours in rear side by jumper. The channels available is two and expandable as per user requirement. This unit has the facility to set the changeover timing of ac loads and necessary control using contactors assembly in a wall mounting panel