to make it touch operated. The circuit is very simple and using only 5 components which are a 555 timer IC, a 12 volt relay, two 5.1 mega ohms resistors and a 1N4007 diode.
The circuit can be operated with 12 volt DC supply or battery. You can also operate the circuit with low voltage for example 5 or 6 volts but it is essential to use a same voltage relay also.  






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A 555 IC can be used to build a very efficient touch switch circuit like the one shown here. We can also say it a touch activated relay circuit. The circuit is quite sensitive and makes a 12 volt relay ON and OFF when you touch the points shown in the circuit.
You can connect any AC or DC device with the relay


 
Touch Switch Circuit Schematic with 555 IC
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