Individuals who rent their property must obtain permission to install a security system before following through with their ADT system addition plans. Generally, property owners view adding a security system as a property improvement and, as a result, will grant permission for this addition. Often, however, they require that the renter lists the property owner as an authorized agent on the security system agreement, giving the property owner the right to contact ADT and gain access to the property when necessary.
ADT systems come in many different varieties; however, all are wall-mounted. Most systems feature a control panel that must be mounted near enough to a door so users can disarm it before the alarm sounds. Many also include motion detectors and fire alarms, which must be mounted around the rooms that are to be protected. While there are some limitations on where these items can be mounted -- for example, some can't be mounted too close to a heat source -- nearly any flat surface will work as a mounting base.
In the past, all ADT security systems were wired into the home, presenting an installation challenge. Today, however, ADT offers systems that are entirely battery-operated. Individuals whose properties are already wired for a security system can often use this wiring when installing an ADT system, but if no wiring exists, installation can be simplified by the selection of a wireless system.
Though not entirely requisite, some ADT system features will not work without a telephone line. Many ADT systems offer a two-way calling feature that enables you to speak to ADT from your control panel. If a homeowner does not have a phone line, this feature will not be available to her.