I am oversea managing director of Shenzhen Safety Electronic Technology Co.,Ltd for over than 7 years .260 workers, 25000 ㎡non-dust workshop, 13 years experience, 7 years' vendor of European leading security companies, ISO, CE & EN Rohs CCCcertificated,one hour reach shenzhen port, this is how we keep superior quality and competitive offers for global valued customers. Our main products cover security alarm system ,smoke/gas leak/co/water leak/ glass break/ Vibration/Active beam detector ,PIR sensor ,door sensor ,siren and so on .