Warranty Statement

Limited Warranty Policy

Otis Instruments, Inc.
301 S. Texas Avenue, Bryan, Texas 77803

1. Warranty Coverage

Otis Instruments, Inc. (“Otis”) warrants the manufacture of all Otis hardware, firmware, software, components, and product accessories (“Otis Products”), contained in the original packaging, against defects in materials and workmanship when used normally in accordance with Otis’ published guidelines for a period of ONE (1) YEAR from the date of original purchase by the end-user/purchaser from the manufacturer or authorized sellers/distributors (“Warranty Period”).

Otis’ published guidelines include, but are not limited to, information contained in technical specifications, operation/user manuals, and service communications.

2. Battery & Sensor Element Warranties

  • Batteries: All batteries supplied to the purchaser by Otis are covered for ninety (90) days from the date of shipment, unless otherwise noted.*

  • Sensor Elements: Sensor elements supplied by Otis have individual warranties regarding product lifetime and performance. Please refer to individual product manuals and published guidelines for specific sensor warranties.

*Battery for the GEN II Model OI-6940 “The Quad” WireFree Explosion-Proof Battery-Powered Multi-Gas Detector is excluded from the ninety (90) day battery warranty.

3. Warranty Exclusions

This Warranty does not apply to any non-Otis manufactured products, even if packaged or sold with Otis Products. Otis does not warrant that product operation will be uninterrupted or error-free. Otis is not responsible for damage arising from failure to follow operational instructions.

This Warranty does not cover:

  • Wear & Consumables: Batteries, or protective coatings designed to diminish over time (unless failure occurred due to a defect in materials or workmanship).

  • Cosmetic Issues: Scratches, dents, and paint chipping.

  • External Causes & Accidents: Misuse, abuse, accident, liquid damage, force majeure, or damage caused by use with non-Otis products.

  • Improper Operation & Maintenance: Operation outside published guidelines, neglect, improper wiring, improper installation, or faulty calibration/testing.

  • Unauthorized Service & Alterations: Repairs or service performed by anyone who is not an authorized Otis service provider, as well as unauthorized modifications or functional alterations.

  • Normal Aging: Routine wear and tear or aging of the device.

  • Missing Identifiers: Any product where the factory serial number has been removed, defaced, or altered.

Note: If factory examination reveals that the alleged defect does not exist or was caused by misuse, unauthorized repairs, or improper installation, the Warranty is null and void.

4. End-User Responsibilities

To maintain device reliability and qualify for warranty support, purchasers must observe the following:

  • Routine Calibration: Perform periodic null and calibration procedures—recommended every thirty (30) days, not to exceed ninety (90) days—for optimal performance and prevention of operational failures.

  • Proof of Purchase & Diagnostics: Furnish proof of purchase details and complete initial troubleshooting/diagnostic steps with Otis personnel upon request.

  • Data Backup: Back up all data and configurations on data-logging units prior to service. Otis is not responsible for lost data or settings during repair.

  • Shipping Preparation:

    • Products must be returned in their complete assembly as originally shipped.

    • For Gas Detection Products (Sensor Assemblies), remove external antenna(s), rain guard(s), and all batteries before shipping.

  • Post-Service Configuration: Serviced units are returned with factory default settings. The end-user is responsible for restoring custom settings, resetting null points, and performing field recalibration prior to site reintegration.

5. Warranty Service & Remedy

If an Otis Product malfunctions, consult product manuals and resources Click Here. 
 If the issue persists, contact your authorized distributor or Click Here.

Remedy Options

At its sole discretion, Otis will provide one of the following remedies:

  1. Repair the device using new or serviceable pre-owned parts equivalent to new in performance and reliability.

  2. Replace the device with a functionally equivalent model assembled from new and/or serviceable pre-owned parts.

  3. Refund the original purchase price upon return of the item.

Service Terms

  • Quick-Turn Exchange: Otis treats repairs as quick-turn module exchanges and does not replace individual board-level components (e.g., resistors, capacitors, switches, relays).

  • Replacement Coverage: Repaired or replaced parts assume the remaining balance of the original warranty, or ninety (90) days from repair/replacement (whichever provides longer coverage). Replaced items become the property of Otis.

  • Warranty vs. Non-Warranty Rates:

    • In-Warranty: Repaired or replaced at no charge.

    • Out-of-Warranty: Diagnosed and quoted prior to work; charged at list price minus distributor discount. Work proceeds only with customer authorization.

  • International Service: Customers outside the United States are responsible for all applicable import/export compliance, duties, and taxes. Service options, parts availability, and turnaround times may vary by region.