How Many Hardwired Zones Are On a Interlogix Simon XTi or XTi-5?

There are two hardwired zones on an Interlogix Simon XTi or XTi-5. These panels can support up to 40 zones. Of these zones, two can be hardwired or wireless. But the other 38 must be wireless. To use additional hardwired sensors, they must occupy wireless zones using wireless transmitters.

The circuit boards for the Interlogix Simon XTi and XTi-5 Systems both feature hardwire terminals for wired sensor. Each panel's terminal block can accommodate two wired sensors. A wired sensor is connected directly to one of these terminals. It is then set up with the XTi or XTi-5 System through the programming menu. The Installer Code for the system is needed to access programming.

The wired sensor will receive its own Sensor Number so that it can be more easily identified later. Any wired sensor used with the system will occupy one of the system's 40 total zones. This means that by adding a wired sensor to the system, one fewer wireless sensor will be able to be added to the system later. So if no wired sensors are used with the system, then 40 wireless sensors can be used. But if two wired sensors are used, then only 38 wireless sensors can be supported.

If a user wants to add additional wired sensors to their XTi or XT-5 System, then they will need to communicate with the system wirelessly. This is possible using a wireless transmitter. A hardwired sensor connects directly to a wireless transmitter, and the transmitter sends wireless signals to the system on the behalf of the sensor. When this is done, the wired sensor will take up a wireless zone on the system.

In some cases, a user may need to add a large number of wired sensors to their XTi or XTi-5 System. For these situations, it is best to use a compatible wired to wireless converter, such as the Qolsys Hardwire-8. This device can support up to eight different wired burglary sensors, and it will send a wireless 319.5 MHz signal for each so that the wired sensors can communicate with the Interlogix Simon System. But remember, each wired sensor will still require its own unique wireless zone to be programmed with the system.