The Yale Easy Fit EF-KIT1 Alarm Kit is suited to flat, terraced or semi-detached homes & is really simple to install too. Simple home alarm system Based around an uncomplicated keypad-operated system, the Yale EF-KIT1 Alarm Kit is a great way to safeguard your home or small business. Two PIR movement detectors pick up when someone is moving through a protected area, effectively triggering the alarm system's siren box. There are also two door contacts to cover entrances, helping to stop intruders before they gain full access to your home. Easy operation Your Yale EF-KIT1 Home Alarm System can be quickly set or disabled using an access code via the keypad. A 20-second exit/entry period can be pre-set to allow for more convenient arming & disarming. No cabling is needed between each component since they're all wirelessly per-linked. Make sure you've got your home covered with the Yale Easy Fit EF-KIT1 Alarm Kit.