IQ Force™ Gas Detector Reference Manual 5 Other electronic safeguards turned off, brought to an area that is known to be safe, and then turned on again to reset the alarm. The IQ Force must then be recalibrated before being put back in service. 1.4.4 LEL response failure due to lack of O 2 alarm The IQ Force features automatic warning against LEL sensor response failure due to lack of oxygen. See Section 2.4.7 for details. 1.4.5 Security beep/flash The IQ Force includes a security beep function that is designed to notify the user that the instrument is powered up and running. Once enabled, the IQ Force will emit a short audible beep and give a short flash on the LED at a user-defined interval. The security beep flash function maybe enabled and the interval maybe changed with BioTrak software or directly with the MODE button (see Section 6 for direct programming instructions).