... DC9V ) 315M/433M Wireless signal alarm Dustproof,mothproof Name:CE Approved Wireless optical working of fire sensor(DC9V 315M/433M ... .Wireless signal alarm3.Single sided fiberglass PCB4.High denstity SMT design,high stability5.Dustproof,mothproof and anti-white light6. ... series,flash lamp,burglarsystem,security accessory series,CCTV system CE Approved Wireless optical working of fire sensor(DC9V 315M/ ...