Hello, everyone. Please tell me I bought a pair of DAHUA 2,3 cameras, And 5 series,so the 2nd series camera is slightly warm to the touch,i.e. it does not heat up,the 5th series is already hotter to hold your hand, but the heating is already above average,but the 3rd series Dahua IPC-HDW3841EM-S-S2 is already so hot that for a long time the hand is not you can probably keep it at 70 degrees or more, especially at night with a backlight. I wanted to find out how critical the high temperature is for them.Thank you.