#flow switch
#water detect swicth
flow switch ki sahayata se ham . water tank ko automatic timing system banaa sakte hain. jaise ki agar . tank mein Pani Khali hua aur. controller ne motor on Kiya fir . 10 se 15 second baad . Pani Tanki ke andar nahin aaya to controller ko signal nahin milega aur ye. motor ke panel ko off karva dega. yadi agar Pani a Gaya to yah water detect karke . signal controller ko dega aur motor ka panel on hi rahega !