Timely Beeper

You can fix this circuit in the switch board that provides power to the loads such as Water heater, Electric Iron etc to remind you that the load is switched on. LED blinks indicating the load on status and the buzzer beeps every 30 minutes. This helps to prevent the wastage of energy usually happens when we forget to switch off these devices. This can be also used to remind, if remote lights such a terrace light is switched on unnoticed.

See more in this link http://www.engineersgarage.com/contribution/timely-beeper

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