How to Disable a Rattler Alarm

A Rattler alarm is factory preset to alert you when carbon monoxide (CO) levels reach between 25 and 35 parts per million (ppm). It notifies you by flashing, shaking and sounding off. It will run through that sequence again when ambient gas levels double. Additionally, when hydrogen sulfide (H2S) concentrations reach 10 and 20, your Rattler will also notify you. You can disable your alarm in multiple ways. Alternatively, you can view your factory alarm low and high set point levels and decide whether disabling it is what you really want to do.

Hex tool (if needed)

Instructions

- 1
  Press the "On/Off" button and hold it down for five seconds or until it beeps four times. To view the factory low and high alarm set points, go to the next step.
- 2
  Press the "On/Off" button, hold it down and stop when "On" is displayed.
- 3
  Press the "Mode" button two times to view the factory low alarm set point; press the "Mode" button once more to view the factory high alarm set point; press the "Mode" button one more time to return to the mode for gas readings. To reset the peak readings and once again turn off the Rattler alarm, go to the next step.
- 4
  Press the "On/Off" button once and then press "On/Off" and hold it down for five seconds and stop after you hear four beeps. If your Rattler alarm is not disabled, go to the next step.
- 5
  Insert the hex tool that was included with your Rattler into the battery pack located on the bottom of the alarm.
- 6
  Turn the hex tool counterclockwise 1/8 of a turn and then remove the battery cap.
- 7
  Remove the battery. Replace the battery cap.
- 8
  Insert the hex tool into the bottom of the battery cap and turn it clockwise 1/8 of a turn to secure the battery cap in place.

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