# ComNav Sine/Cosine Gyro Interface Box (P/N 21010004)

### Fully Tested & Verified Operational by Marine-Supply

Up for sale is a genuine **ComNav Sine/Cosine Gyro Interface Box** (Part Number: **21010004**). This unit is designed to interface a sine/cosine signal from a gyrocompass directly into ComNav autopilot systems, primarily used with the popular **ComNav 1001** and **ComNav 2001** series.

### Item Condition & Testing

 * **Condition:** Pre-owned, used marine equipment.

 * **Testing:** Fully tested and confirmed **100% working properly** by our team at **Marine-Supply**.

 * **Cosmetics:** Shows normal signs of previous installation and use (minor surface scuffs/marks typical for marine electronics hardware), but clean overall with no functional defects.

 * **Important:** Please inspect all detailed high-resolution photos carefully to evaluate the exact cosmetic condition and verify connection points prior to purchase.

### Key Features & Compatibility

 * **Part Number:** 21010004

 * **Function:** Converts Sine/Cosine gyro signals for autopilot system integration.

 * **System Compatibility:** Designed for **ComNav 1001**, **ComNav 2001**, and compatible marine autopilot systems.

### What's Included

 * (1) ComNav Sine/Cosine Gyro Interface Box (P/N 21010004)

 * *Note: Includes only what is shown in the photos. Additional wiring harnesses, mounting hardware, or manuals are not included unless pictured.*

### Shipping & Returns

 * **Shipping:** Packaged with extra care in ESD-safe/protective padding to ensure safe delivery. Ships out promptly with tracking.

 * **Returns:** Backed by our standard return policy—buy with confidence knowing this unit has been professionally verified working.

> **Buyer Tip:** Please double-check your existing system specs and part numbers to ensure compatibility before ordering. If you have any technical questions, feel free to send a message!

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