Apollo XPander Diversity Loop Interface Unit - XPA-IN-14050-APO

The XPander Diversity Loop Interface Unit can monitor up to 31 XPander devices and report each device’s status to an intelligent fire control panel.

Operation

The XPander Diversity Interface is connected to the loop and provides communications from the control panel to the wireless devices and vice versa.

The current drawn from the Interface should be taken into consideration when calculating the total load of a loop.

The XPander Diversity Interface has an integral LCD display which gives information on the state of the wireless detectors. The Diversity Interface transmits and receives signals via the integral Diversity Aerials which require no adjustment or maintenance.

Device Addressing

An 8-segment DIL switch is provided for the address of the Interface to be set. When polled by the control panel, the XPander Interface returns a pre-set analogue value of 16 in normal condition.

Radio Communications

Fire detection systems are life-saving systems and must, therefore, be highly reliable in use. Radio communications have been developed to a point where high reliability can be guaranteed, provided that the rules for the design of radio systems and installation are carefully observed.

Radio communication technology in the detection has matured to the point where a standard has been drawn up as part of the EN54 family of standards for components of a fire detection system. The standard is EN54 Part 25.

Frequency

The frequency used by XPander is 868MHz which is the harmonised European radio frequency.

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