MultiRAE User’s Guide7814 Alarms OverviewThe MultiRAE provides an unmistakable five-way alarm notification system that combines local alarmson the device with real-time remote wireless alarm notification (if the instrument is equipped with theoptional wireless functionality) to take worker safety to the next level. Local alarms include audiblebuzzer alarm, visible alarm via bright LED lights, vibration alarm, and an alarm notification on thedisplay. These can be selectively turned on or off.Note: The vibration alarm is automatically disabled whenever the instrument is run on alkaline batteries.14.1 Alarm SignalsDuring each measurement period, the gas concentration and radiation levels are compared with theprogrammed alarm limits for Low, High, TWA, STEL, and other alarms, as applicable. If theconcentration exceeds any of the preset limits, the alarms are activated immediately to warn both theMultiRAE user and a remote safety officer (if wireless is enabled) of the alarm condition. In addition togas and radiation alarms, Man Down and other alarms are available.Furthermore, the MultiRAE alarms if one or more of the following conditions occurs: battery voltage low,pump blocked, PID lamp failed, etc.When the low battery alarm occurs, there may be approximately 10 minutes of operating time remaining. In thiscase, it is recommended that you promptly change or charge the battery in a non-hazardous location.14.2 Changing The Alarm ModeYour choices are Auto Reset and Latched. A latched alarm stays on until you acknowledge the alarm bypressing a button. An auto-reset alarm turns off when the condition that set off the alarm is no longerpresent (for instance, a high H2S reading that exceeds the preset threshold and triggers an alarm, but thenlowers below that threshold, turning the alarm off).1. Enter the Alarm Mode sub-menu of the Alarms section under the Programming Menu.2. Select Auto Reset or Latched by pressing [N/-] to select, and [Y/+] to confirm the choice.3. Press [Y/+] to save your selection.