Important Note:
The image displays three annunciators for illustration purposes. When selecting from the list, please be aware that each option corresponds to a single annunciator only. For example, if you choose Master Warning, you will receive only the Master Warning annunciator, not all three.
Designed using real-world dimensions, the lenses replicate the exact size of the genuine 737 Boeing Korry units, ensuring an unmatched level of authenticity. The outer case, rendered in high-quality resin, is deliberately dimensionally larger than its metal counterparts, due to the use of resin over metal construction.
Engineered for Exceptional Performance
The V2 Annunciators are the pinnacle of Karl's Engineering—fully pre-built and crafted with the finest components available in limited space. Upgraded from the previous generation, these units now feature the advanced soft-press ALPS buttons with an enhanced push force and longer travel distance, outclassing the 6x6 mm LED tactile switches used in V1. All SMD components, including two ultra-bright SMD LEDS, are seamlessly integrated into each unit. Built with the correct 5v resistors, these annunciators offer a plug-and-play experience with Arduino—no extra resistors required.
Innovative Connectivity & Versatile Integration
Designed as a common Ground/Cathode unit, each annunciator comes equipped with three dedicated pins:
- GND
- LED
- BUT (button/switch, configurable for acknowledgement or cancel via Mobiflight)
This simplicity in design ensures straightforward installation while maintaining flexibility for various integration setups.
Enhanced Visual Impact
Every annunciator is outfitted with white LEDS paired with colored acrylic lenses and a diffuser lens. This deliberate choice of components guarantees that the unit “pops” when illuminated, delivering a striking, even glow that elevates the cockpit’s visual appeal—even when mixing lens colours.
Custom Installation Options
For enhanced mounting and durability, each unit can be ordered with an optional resin-printed backcage and hardware.
Note: The backcage is not required for builders using the 737SS shell, Master Caution & Fire Warning captions
Selection Guide:
- Single Unit: Choose with or without backcage.
- 737SS Build: Select all 3 units (backcage optional).
- 737 Dual-Seat Build: Select all 5 units (backcage optional).
- QTY2 MC & FW.
- QTY 1, SOOT
Master Caution/Fire Warning/Stab Out Of Trim Annunciator (Fully Built V2)
⚠️ Safety Precautions for Handling DIY Plastic Panels
Whether you're assembling, modifying, or installing your panels, follow these guidelines to ensure personal safety and preserve the quality of your build.
🧍 General Safety Precautions
- Adult Supervision: This kit may contain small parts and sharp edges. Adult supervision is required, especially for children under 14.
- Work Area: Set up in a well-lit, clean, and uncluttered space to minimise accidents.
- Tools: Assembly may require screwdrivers or other sharp tools—handle with care to avoid injury.
- Small Parts: Keep all small components out of reach of 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 any parts. Be cautious with small or sharp plastic pieces.
- Packaging: Plastic wrapping can pose a choking hazard—never place it over the head, and dispose of it responsibly.
🛠️ Handling & Assembly
- Avoid excessive force when fitting or aligning panels to prevent cracking or stress fractures.
- Use non-abrasive tools (e.g., plastic pry tools or soft cloths) to avoid scratching painted or etched surfaces.
- Secure panels gently—over-tightening screws can cause stress marks or warping.
🧪 Chemical Safety
- Do not use harsh cleaners like acetone or alcohol on painted or lacquered surfaces—they may strip the finish.
- Use mild soap and water or acrylic-safe cleaners for routine cleaning.
- Allow paint and lacquer to fully cure before handling—typically 24–48 hours depending on conditions.
🔥 Environmental Precautions
- Keep panels away from heat sources—acrylic can warp or discolor under high temperatures.
- Store in a dry, dust-free environment to prevent surface damage or contamination before installation.
📦 Transport & Storage
- Use soft padding (e.g., foam or microfiber cloth) when storing or transporting panels.
- Avoid stacking heavy items on top of panels to prevent bending or surface damage.
