1) Wireless Alarm System with Built-in Rechargeable Battery and Auto Dial Function 2) LED display 3) factory direct price HOT on sale Wireless Alarm System with Built-in Rechargeable Battery Auto Dial alarm burglar alarm system Functions: Auto dial 6 phone numbers, 10 seconds self-recorded voice Alarm priority, if there is alarm when the phone line is busy, it would hang up other lines, and make ...