Basic Alarm Easy to use small alarm system ideal for flats, apartments, garages and storage areas. Add extra Detectors & Controllers as required. Easy and quick not fuss wireless installation. Add more detectors or wireless keyfobs as required. The Alertgen basic alarm is armed and disarmed using one or the 2 wireless keyfob remote controls supplied. Two intruder detectors are supplied one for an entry door and one wireless movement detector for inside the property. Add as many wireless door and window contact detectors as you require. Extra rooms can be protected with additional wireless PIR movement detectors.