Meru Technologies timer switch is a Mechanical timer which runs the particular device which is connected for that preset time then it will automatically turns off so there is no need to remember that particular device needs to be switched off. SO WITH TIMER SWITCH AND GO... ITS OKAY TO FORGET... MERU TECHNOLOGIES will take care of your device and it user friendly for the age above 60+ who dont know to operate complicated programmable timers and sensor based timers. Meru Technologies Timer is a Mechanical timer which will turn household electrical devices on or off based on Time you select to run that particular device. The timer has 4 different preset on/off settings and is good for LED lights, televisions, fish pod , motors like submersible motors, jet motors, normal monobloc motors,water heater, water dispensers, street lamp, staircase lamp, advertising lamp boxes, breed aquatics, irrigation, agriculture, office power auto control, lighting equipment, garden lights, glow sign board, fish aquarium and in anywhere need time control in civilian, home or industrial, stereos as well as other household and industrial devices