Gautam enterprises manufactures g-series of digital time switch that allows to switch on and switch off automatically any electrical system/appliance without requiring physical presence. These switches automate and save man power which result in increased productivity shift/day. These switches are applicable for any system requiring some kind of pre-setting [either heating or cooling] time. The time switches come with weekly off day programmable option to operate only on required number of days, a security key lock to make tamper proof and a battery back up of more than two years with on-field replaceable ordinary pencil cell. These switches need no maintenance and are available with salient characteristics such as quartz accuracy, simple three switch programming, solid state relay output, one minute minimum setting time and wall/panel mounting option.