This Wireless Sos Pager System Comes With Both An Extra Loud, Flashing Chime And Vibrating Pager, So You Can Receive An Alert In The Event Of An Emergency Easy, Wire-Free Installation With An Impressive 250 Metre Range Product Information:This Wireless Sos Pager System Comes With Both An Extra Loud, Flashing Chime And Vibrating Pager, So You Can Receive An Alert In The Event Of An Emergency,Features:Easy, Wire-Free Installation With An Impressive 250 Metre Range,Product Specification:Product Code: Mp-00022405