CO Guardian Aero 451-201 Remote Mount CO Detector

• Designed for Part 23 aircraft and Part 27 and 29 helicopters.
• Dimensions: 3.35 in. L x 2.25 in. W x 1.50 in. H.
• Weight 4.0 oz.
• Input Power 14/28 VDC.
• Internal fan for optimum sensing.
• Shielded to prevent EMI (Electro-Magnetic Interference) with aircraft systems.
• Audible alarm with varying pitch at 85 dB.
• Requires installation of remote annunciator light (not included)
• Temperature ranges 0 °F to 110 °F.
• Built-in temperature compensating circuit.
• Test/Reset button and external mounting bracket included.
• External annunciator light (lamp or LED) sold separately.

View all of our videos on our YouTube video channel.

• Aero 451-201 User Manual (PDF)
• Aero 451-201 User Install Drawing (PDF)
• FAA NORSEE Installation Authorization for Aero 451 Products

Guardian Avionics products are covered by a 60-day money-back guarantee and a one-year limited warranty.

Coverage

Guardian Avionics (CO Guardian LLC) warrants to the original purchaser that this detector will be free from defects in material and workmanship for one (1) year from the date of purchase. Coverage is registered automatically; retain your invoice as proof of purchase date.

Should a defect arise within the warranty period, Guardian Avionics will, at its sole discretion, repair the unit, replace it, or furnish a repaired unit. This is the purchaser's sole and exclusive remedy under this warranty. Any repaired or replacement unit is warranted for the remainder of the original warranty period or for six (6) months, whichever is longer. No charge applies other than return postage.

This warranty extends to the original purchaser only and is not transferable.

Exclusions

This warranty does not apply where the unit has been:

• opened, modified, or otherwise tampered with;
• damaged by accident, unreasonable use, or neglect; or
• affected by installation or soldering errors, for which Guardian Avionics accepts no responsibility.

Nor does it extend to any failure arising from a cause other than a defect in material or workmanship.

Disclaimers and Limitation of Liability

All implied warranties, including the implied warranties of description, merchantability, and fitness for a particular purpose, are limited in duration to the warranty period stated above.

Guardian Avionics shall not be liable for loss of use, or for any indirect, special, incidental, or consequential damages, costs, or expenses incurred by any user of this product, whether such claim arises in contract, negligence, strict liability, or otherwise — including any personal injury or property damage resulting from gas leakage, fire, or explosion.

This detector is not a substitute for property, disability, life, or other insurance. Securing appropriate coverage remains the responsibility of the owner.

Certain states do not permit limitations on the duration of an implied warranty, or the exclusion of incidental or consequential damages; accordingly, portions of the foregoing may not apply. This warranty confers specific legal rights, and the purchaser may hold additional rights that vary by jurisdiction.

Claim Procedure

1. Verify that the serial number on the unit matches the number shown on your invoice.
2. Request a Return Materials Authorization (RMA) number using the online form at guardianavionics.com/pages/rma-request, or by telephone on 520-889-1177 or email to support@guardianavionics.com. An RMA number must be issued before any unit is returned. Units purchased through a dealer should be submitted to Guardian Avionics directly.
3. Return the unit postage prepaid to the address below, marked with the RMA number and accompanied by proof of purchase date and a description of the fault.

Warranty Service

Guardian Avionics / CO Guardian LLC
Attn: RMA #______
1840 E Valencia Rd, Suite 216
Tucson, AZ 85706

520-889-1177 · Fax 520-889-8249 · support@guardianavionics.com

Monday–Friday, 8:00 a.m. – 5:00 p.m. MST

Guardian Avionics Installation Examples

Because of their sensitive nature, all carbon monoxide
(CO) detector sensors require replacement after a period of time to remain accurate. All Guardian Avionics / CO Guardian aviation CO detectors feature a self-test at power on for each flight. If the unit shows a failure of the CO sensor upon power up, you must send the unit to Guardian Avionics for replacement or overhaul. Depending on level of
use, storage environment, and flight environment, most CO sensors have a usable life of 5-7 years. Though our units have a required Time Before Overhaul (TBO) of Seven (7) years from point of installation regardless of self-test results, we recommend sending in your unit for replacement / recalibration every 5 years during your annual maintenance inspection to assure safety and accuracy of your unit.

The procedure for recalibration is as follows:

• Remove component and note full model number and unit serial number.
• Apply for an RMA Number at: https://www.guardianavionics.com/rma-request or call 520-889-1177 (M-F, 8am to 5pm MST) - the RMA number will be emailed back to you.
• Order a recalibration or new replacement at https://www.guardianavionics.com/recalibration.
• Send unit in under RMA number to: Guardian Avionics, Attn: RMA #___, 1840 E Valencia Rd Suite 216, Tucson, AZ 85706
• Once unit is received by Guardian Avionics, the recalibrated or replaced unit will be shipped within 3-5 business days unless specified. Core charge will be refunded.
• Upon receipt of the recalibrated/replaced unit, a fresh 1 year limited warranty applies and the unit has a fresh 7 year TBO.