16-1S E C T I O N 1 6Limitations and Warranty• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •WARNINGTHE LIMITATIONS OF THIS ALARM SYSTEMWhile this System is an advanced design security system, it does not offer guaranteed protection againstburglary, fire or other emergency. Any alarm system, whether commercial or residential, is subject tocompromise or failure to warn for a variety of reasons. For example:• Intrusion detectors (e.g., passive infrared detectors), smoke detectors, and many other sensing devices willnot work without power. Battery-operated devices will not work without batteries, with dead batteries, or ifthe batteries are not put in properly. Devices powered solely by AC will not work if their AC power supply iscut off for any reason, however briefly.• Signals sent by wireless transmitters may be blocked or reflected by metal before they reach the alarmreceiver. Even if the signal path has been recently checked during a weekly test, blockage can occur if ametal object is moved into the path.• A user may not be able to reach a panic or emergency button quickly enough.• While smoke detectors have played a key role in reducing residential fire deaths in the United States, theymay not activate or provide early warning for a variety of reasons in as many as 35% of all fires, according todata published by the Federal Emergency Management Agency. Some of the reasons smoke detectors usedin conjunction with this System may not work are as follows. Smoke detectors may have been improperlyinstalled and positioned. Smoke detectors may not sense fires that start where smoke cannot reach thedetectors, such as in chimneys, in walls, or roofs, or on the other side of closed doors. Smoke detectors alsomay not sense a fire on another level of a residence or building. A second floor detector, for example, may notsense a first floor or basement fire. Finally, smoke detectors have sensing limitations. No smoke detector cansense every kind of fire every time. In general, detectors may not always warn about fires caused bycarelessness and safety hazards like smoking in bed, violent explosions, escaping gas, improper storage offlammable materials, overloaded electrical circuits, children playing with matches, or arson. Depending onthe nature of the fire and/or location of the smoke detectors, the detector, even if it operates as anticipated,may not provide sufficient warning to allow all occupants to escape in time to prevent injury or death.• Passive Infrared Motion Detectors can only detect intrusion within the designed ranges as diagrammed intheir installation manual. Passive Infrared Detectors do not provide volumetric area protection. They docreate multiple beams of protection, and intrusion can only be detected in unobstructed areas covered bythose beams. They cannot detect motion or intrusion that takes place behind walls, ceilings, floors, closeddoors, glass partitions, glass doors, or windows. Mechanical tampering, masking, painting or spraying of anymaterial on the mirrors, windows or any part of the optical system can reduce their detection ability. PassiveInfrared Detectors sense changes in temperature; however, as the ambient temperature of the protectedarea approaches the temperature range of 90° to 105°F (32° to 40°C), the detection performance candecrease.• Alarm warning devices such as sirens, bells or horns may not alert people or wake up sleepers if they arelocated on the other side of closed or partly open doors. If warning devices are located on a different level ofthe residence from the bedrooms, then they are less likely to waken or alert people inside the bedrooms.Even persons who are awake may not hear the warning if the alarm is muffled by noise from a stereo, radio,air conditioner or other appliance, or by passing traffic. Finally, alarm warning devices, however loud, maynot warn hearing-impaired people.• Telephone lines needed to transmit alarm signals from a premises to a central monitoring station may beout of service or temporarily out of service. Telephone lines are also subject to compromise by sophisticatedintruders.• Even if the system responds to the emergency as intended, however, occupants may have insufficient time toprotect themselves from the emergency situation. In the case of a monitored alarm system, authorities maynot respond appropriately.• This equipment, like other electrical devices, is subject to component failure. Even though this equipment isdesigned to last as long as 20 years, the electronic components could fail at any time.(Continued)