Sr is caimra mai koi hamari baate sunskta h kya or koi dekh sakta h bina pas ward jane hume ak h sr mai ra caimra jb on hota h to wi fai band ho jata h or jb teevi chalo to chlta h
Bhai g dvr ka time wala cell khatm ho gaya tha vo same no ka laker daal diya par camera off hone pr time change ho jata hai 20min aage piche ho jata hai koi solution bata do
Battery change will solve this problem 99% but if still time changes then make sure u have selected gmt 5:30 time zone. And for more plz share the brand of dvr. I will try to help u further.
Price aapke area pe depend karta hai. Search for local dealers for cctv nearby. Waise 4 ch ka dvr approx 3000/- aur 8 channel ka approx 4000/- ka mil jaana chaiye.