Sometimes I have to say is their own good luck, when I buy monitoring equipment is just one of this HDB CCTV of this company doing promotions, I was seeing this a HDB CCTV price so preferential I can directly choose this to a HDB CCTV, when I think of it is to install monitoring equipment is not what kind of very powerful function after buying it, but did not think this is a HDB CCTV I buy the effect is so strong, but also the quality is good to my own surprise, if I didn’t buy the use I really do not believe that a product is so good.