Devices, systems, and methods for event device maintenance are described herein. In some examples, one or more embodiments include a mobile device comprising a user interface, a memory, and a processor to execute instructions stored in the memory to receive an inventory including a group of event devices, generate a device identification analysis for the group of event devices, display on the user interface the device identification analysis, receive an input for an event device of the group to take an audit action, and initiate the audit action to be taken by the event device of the group in response to the input.

A system and method for performing a self-testing a piezo sounder using a feedback pin while being driven by an ultra-sonic frequency. A method includes operating a sounder device in a test mode, the sounder device is operated in an inaudible frequency range during the test mode and detecting a feedback response voltage. The method includes comparing the feedback response voltage to a reference voltage and providing an indication of a failure mode based at least in part on the feedback response voltage.

A method of testing a smoke alarm system including: receiving a first manual input via an input device of a mobile device from a user of the mobile device, the first manual input indicating that the user would like to initiate a test of the smoke alarm system including one or more smoke alarms, the one or more smoke alarms including at least a first smoke alarm; determining a time slot allocation, the time slot allocation indicating when each of the one or more smoke alarms should emit an alarm; transmitting the time slot allocation to each of the one or more smoke alarms, wherein each of the one or more smoke alarms is configured to activate the alarm in accordance with the time slot allocation; activating a first alarm on the first smoke alarm; and receiving a second manual input indicating that the user has heard the first alarm.

The subject disclosure relates to solutions for testing lighting systems and in particular, for verifying lighting system operability in the event of a power failure. A process of the disclosed technology can include steps for receiving an interrupt command, toggling an interrupt relay in response to the interrupt command, and measuring one or more lighting characteristics of the lighting array to determine if the second power supply can power the lighting array. Systems and machine-readable media are also provided.

The present disclosure generally relates to the field of fire alarms. The teachings thereof may be embodied in a strobe notification appliance having: a boost circuit connected to an input voltage; an energy storage circuit charged by the boost circuit; a drive circuit generating a drive current; an LED circuit with at least one LED element; a first sampling circuit collecting an overall voltage drop of all the LED elements; and a control circuit configured to adjust the drive circuit to supply a working current during an alarming stage and supply a detection current during a detection stage. The detection current is lower than the working current and thereby light energy produced by the LED elements during the detection stage is lower than alarming light energy produced during the alarming stage. During the detection stage, the control circuit determines whether the LED circuit works normally based on the collected overall voltage drop.

In a method for remote monitoring of alarms, first and second audio test signals, generated by first and second alarm devices at first and second locations, respectively, are sensed, with both alarm devices corresponding to the same alarm type. For each alarm device, the respective audio test signal is processed to generate alarm identification data. An audio signal that the first alarm device generated in response to detecting an alarm condition (e.g., a fire, smoke, etc.) is sensed, and processed according to an audio recognition technique, and using the generated alarm identification data, to identify the alarm device that generated the audio signal. A notification is then caused to be sent to a user. The notification includes the location of the first alarm device.

Disclosed is an alarm unit having an alarm controller, the alarm controller being operatively connected to a plurality of implements within the alarm unit having a mechanical actuator and a magnetic sensor and at least one of a visual source and an audible source, wherein the alarm unit: monitors for input to initiate one of a plurality of self-tests including: a first test, initiated by actuation of the mechanical actuator without actuation of the magnetic sensor, and a second test, initiated by actuation of the mechanical actuator with actuation of the magnetic sensor, and wherein the first test differs from the second test.

Device for checking the integrity of a digital transmission for an analog output of a system. The analog output may be checked for transient errors that can be attributed to a digital transmission path embedded somewhere within the vehicle system. A test signal is introduced into a digital transmission that can be reassembled from an analog path of the analog output, and, if not, allows the test device to pinpoint that errors are appearing due to the digital path, and not because of the analog output. In this way, debugging an installation of a system becomes easier; obtaining confidence in reliability of a mixed analog and digital system becomes less of a challenge and less time consuming.

The present invention relates to a device for generating sound messages, comprising: a generation chain configured to generate a first and a second sound signal carrying a useful audio signal and a test audio signal; a conversion chain configured to transform the first and second sound signals into first and second analog signals; and a verification chain configured to extract the test audio signal from a combination of the analog signals to verify the integrity of the useful audio signal. The first sound signal corresponds to the sum of the test audio signal and the useful audio signal, and the second sound signal corresponds to the sum of the test audio signal and an opposite signal corresponding to the opposite of the useful audio signal.

An emergency lighting system that includes a storage device, an emergency lighting device, an area control device and an external device. The emergency lighting device includes a light, a first controller having a first electronic processor configured to perform a self-diagnostic test, and a first input/output (I/O) device configured to transmit data associated with the self-diagnostic test. The area control device includes a second I/O device configured to receive data associated with the first self-diagnostic test form the first I/O device and transmit the data associated with the self-diagnostic test to the storage device.