AUTOMATIC TIME MANAGER (ATM) has design and developed by Areptone Electronic Products and Merasoft. It is computer software with a computer Interface unit for controlling individually 24 pre set time for automatic actuation of an electromagnetic relay, electrical Hooter Bell or any electrical equipment as per user choice & settings. It can be used for Home, Office, School, Industries and any other such type of application. It can on and off an Air conditioner, Electrical water pump, Electrical Water Cooler etc. It can also on and Off a School Bell for every period as per settings, it can work for shift alarming of a Factory Siren as per settings etc it can also used in chemical laboratory for timer use.