А в гугль не заглядывали? Walk test--Walk test allows the functional testing of the system's devices without the assistance of additional people at the control panel itself. It is also designed to allow initiating devices to be tested without setting off the building's alarms. Most panels offer the option for a silent walk test (no alarms activate) or an audible walk test (alarms activate for a brief period when a device is initiated). A system trouble is typically generated while the panel is in walk test mode. On European panels, this is usually an engineer-only function and cannot be activated by a user. Signal silence--Also known as "alarm silence" or "audible silence". Depending on the configuration of the alarm system, this function will either silence the system's notification appliances completely, or will silence only the audible alarm, with strobe lights continuing to flash. Audible silence allows for easier communication amongst emergency responders while responding to an alarm. This can also be used during construction as a means of a preliminary test, before the final full test.
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