AS ISO 7240.25:2015 Fire detection and fire alarm systems
5.3.3 All components powered by an autonomous power source shall be able to transmit a fault signal (low power) before the power source fails. The following conditions shall be taken into account (see 8.3.4).
a) The component shall be capable of generating and transmitting a fault signal within 60 min after replacing a good or new autonomous power source by a preconditioned power source representing a discharged power source at the end of its service life.
b) The component shall be capable of operating as intended when it is activated using the preconditioned power source representing a discharged power source at the end of its service life.
c) The component shall keep the fire alarm condition and/or another activated condition for at least 30 min (where alarm condition is not applicable).
5.3.4 The loss of the power source shall be indicated as a fault signal from point in accordance with ISO 7240-2. Where several power sources are used for different functions within one component, the fault signal shall be given for each power source (see 5.3.3).
5.3.5 Either the component shall be designed to make polarity reversal impossible or, if not, the polarity of the connections for the power source shall be identifiable and the polarity reversal shall not damage the component (see 8.3.5).
7.1 General
The manufacturer shall prepare the documentation to evaluate the compatibility in the configuration(s) specified by the manufacturer. This documentation shall include at least the following:
a) list of the relevant components of the fire detection and alarm system, which shall define for each component the functions (a part of this definition shall include a description of the software and of the hardware) and the technical information for each component to facilitate proof of the compatibility of each sub-system within the global network system;
b) test reports relative to the conformity of the components, with indication of the relevant part of ISO 7240;
c) characteristics of the r.f. transmission path between each component and the c.i.e.;
d) how the requirements of 4.2.3 are satisfied;