The AERO 553 Multi-Function Carbon Monoxide (CO) detector is a panel mounted TSO Certified unit designed especially for use in both FAA certified aircraft and experimental aircraft. Designed to fit in, and replace a standard 2.25” (2 1/4”) standard instrument panel clock, the AERO 553 gives you a full set of clock, timer, temperature, cabin and density altitude functions along with highly accurate and extremely fast CO detection and PPM readings within the cockpit on an easy-to-read LCD display.
All Guardian Avionics CO Detectors feature a One (1) Year Limited Warranty
Please note, Pilotshop's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Pilotshop assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
Per the manufacturer: Yes the CO guardian has a clock.
The unit comes calibrated from the manufacturer and can only be calibrated by the manufacturer. The installation/operators manual is included with this unit which outlines testing although, the only user executable test to be performed is the power-on self test.
The CO2 sensor wears out after 7 years from date of install.
Per the manufacturer the number is TSO-C48.
They can be recalibrated through Guardian directly.
We have added the installation diagram to the web page.
It can be installed because the unit has a TSO certification from the FAA. Typically a 337 form and field approvals are required for this type of installation.