... wireless intruder alarm system with contact ID function TFT color LCD display ,Menu display , voice prompt ... alarm; not lost number without power.6) Support ISD automatic voice mailbox ... sensors.9) Integrated clock chip, time without lost upon power failure..10) Unique black box features, display ... sensor 1pcs , compare with the old one ,the new one with unique design, New Pir sensor 1pcs ,compare with ...