• D.PRAVEENA BAI
• CH.SRILAKSHMI

Normally, home appliances are controlled by means of switches, sensors, etc. However, physical contact with switches may be dangerous if there is any shorting. The wireless switch circuit described here requires no physical contact for operating the appliance. You just need to move your hand between the infrared LED (IR LED1) and the photo-transistor (T1). The infrared rays transmitted by IR LED1 is detected by the photo-transistor to activate the hidden lock, flush system, hand dryer or else. Generally appliances that we used in our home are being controlled with the help of devices like switches, sensors. However sometimes it is dangerous to have physical contact with these switches. So to overcome these dangers, here we have explained a circuit that needs no physical contact with the appliance. In these circuits all you need is to pass your hand above LDR. As you first pass your hand over LDR the device connected with it started and remain in that state till you again pass your hand above LDR.

"WIRELESS SWITCH USING CD4027 AND J-K FLIP FLOP", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 10, page no.323-330, October-2018, Available :http://www.jetir.org/papers/JETIR1810950.pdf

"WIRELESS SWITCH USING CD4027 AND J-K FLIP FLOP", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 10, page no. pp323-330, October-2018, Available at : http://www.jetir.org/papers/JETIR1810950.pdf