Bought 2 internal cam each 55 usd and 1 external 194 usd as a trial before buying complete set for home surveillance. External cam came with a defective rotating cam bulb support
Problem pending since march 2015 although received 194 usd credit but i experienced twice as much in return and tax costs. Letter to the customer service director never got an answer and supplier never admitted wrong assembly-2 internal cams style received different from order and no audio and very poor installation material.To date still waiting answers to 5 questions since april 2015. VERY BAD EXPERIENCE STOP ALI EXPRESS SUPPLY-ben