Heli AH-64 Master Caution & Warning Annunciators

Introducing the Heli AH-64 Master Caution & Warning Annunciators, engineered to replicate the authentic look and feel of the AH-64 Apache cockpit. This two-piece set includes:

Master Warn Annunciator: Illuminates in vibrant yellow at 2.0v
Master Caution Annunciator: Glows in distinctive green at 3.0v

Each unit features a press function for added interactivity and is housed in an adjustable external cage to accommodate various panel thicknesses. Choose between Fully Built or DIY Assemble options to suit your build style and customisation needs.

Authenticity Meets Engineering Excellence

Designed using real-world dimensions, the lenses match the exact size of genuine 433 Boeing Korry units, delivering unmatched realism. The outer casing is crafted from high-quality resin, intentionally dimensionally larger than metal counterparts to account for material differences.

V2 Annunciators: Karl’s Engineering Pinnacle

Upgraded from the original V1 design, the V2 units feature:

Soft-press ALPS buttons with enhanced push force and longer travel
Integrated SMD components, including two ultra-bright SMD LEDs
Built-in 5v resistors for true plug-and-play Arduino compatibility

No external resistors needed, just connect to the Arduino and go.

Smart Connectivity & Flexible Integration

Each annunciator is configured as a common Ground/Cathode unit with three dedicated pins:

GND
LED
BUT (button/switch, configurable via Mobiflight/similar for acknowledgement or cancel functions)

This streamlined setup ensures easy installation and versatile integration across cockpit builds.

Striking Visual Impact

Outfitted with white LEDs, colored acrylic lenses, and a diffuser lens, these annunciators deliver a crisp, even glow that “pops” in any lighting condition. Whether used individually or with mixed lens colors, they elevate the visual fidelity of your cockpit environment.

Heli AH-64 Master Caution & Warning Annunciators

From £21.78

Quantity

No Build guide Link - unit is prebuilt

WD link can be found here at Step 0: https://www.737diysim.com/build-guides-1/737ss-master-caution-%26-fire-warning-korry
General Safety Precautions:

Adult Supervision: This kit contains small parts and sharp edges. Adult supervision is always required, particularly for children under 14 years old.

Work Area: Ensure you work in a well-lit, clean, and uncluttered area to minimise the risk of mishaps.

Tools: A screwdriver and other tools may be required for assembly. These can have sharp points; care must be taken to avoid injury.

Small Parts: Keep all small parts and pieces out of reach of young children and pets to prevent choking hazards.

Protective Gear: Wear safety goggles and gloves to protect your eyes and hands during assembly.

Handling Parts: Do not lick, chew or swallow the parts. Be cautious when handling small, sharp plastic pieces to prevent injury.

Packaging: These parts may be wrapped in plastic, which can cause a choking hazard if wrapped around one's head.

Safety Warning for PCB Usage

When working with our PCB, always prioritise safety. Please follow these guidelines to ensure a safe and enjoyable experience:

Power Precautions:

Use only compatible power supplies to prevent damage to the PCB and avoid electrical hazards. Never apply more than 5v DC for Arduino or 12v DC for Backlighting.

Double-check voltage levels before connecting any power source.

Circuit Assembly:

Disconnect the power before making any changes to the circuit.

Be cautious when working with high currents or voltages to prevent short circuits, overheating, or electric shock.

Use proper insulating materials to cover exposed wires and connections.

Heat and Handling:

Avoid touching components that may heat up during operation, such as voltage regulators or external modules.

Handle the board by its edges to prevent static discharge that can damage sensitive components.

Proper Environment:

Work in a well-ventilated, non-conductive area.

Keep liquids away from the Arduino and its connections to prevent short circuits.

Children’s Safety:

Adult supervision is recommended when children use or assemble Arduino projects.

Component Integrity:

Use only verified and compatible components to prevent malfunction or damage.

Inspect all components for defects before use.

Adhere to these precautions to minimise risks and safely explore the exciting possibilities of your DIY projects. Have fun building responsibly!

Heli AH-64 Master Caution & Warning Annunciators

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