| CPC G06K 19/0723 (2013.01) [G06K 7/0008 (2013.01); G06K 17/0022 (2013.01)] | 17 Claims |

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1. A component for use in an alarm system comprising:
a component controller configured to control the component when power is supplied to the component; and
a monitoring module comprising a power source and configured to monitor the component when power is not supplied to the component,
wherein the monitoring module is configured to determine occurrence of a predetermined event and to store an indication of the occurrence of the event;
wherein the component controller is configured to start an initialisation procedure upon connection to a power source during installation of the component in an alarm system, the initialisation procedure comprising transmitting a read request to the monitoring module;
wherein the monitoring module is configured to transmit the stored indication of the occurrence of the predetermined event in response to the read request; and
wherein the component is configured to notify a user in response to the component controller receiving the stored indication of the occurrence of the predetermined event from the monitoring module.
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