Y-99P wireless receiver with high strength aluminum alloy shell,durable in ... pagers to work at most Features: Y-99B wireless receiver1 with high strength aluminum alloy shell,durable in use2 Use ... code technology and the function is steady and reliable3 With 4 high brighty LED screen,the visual distance ... will be 50 meter indoor4 It can work with 99 routes transmitter MAX,all single-key button ...