Switch Electronics LED Panel Indicator - 8mm, 12V, Red/Green
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Product Information
Full details
This 8mm, 12V red/green LED panel indicator from Switch Electronics is designed for professionals needing reliable visual status feedback in control panels, industrial equipment, and telecommunications. Its key benefit is providing clear, dual-color indication with a common anode setup. A potential caveat is the fixed 200mm prewired leads, which may require extension in some installations. Features include a durable metal housing, clear LED lens, integrated resistor, gasket for panel sealing, and straightforward panel mounting.
All features
| Model Part Number | 490475 |
|---|---|
| Brand | Switch Electronics |
Extended Product Information
FAQs
What does 'common anode' mean for this LED?
Common anode means that the positive (+) terminals of both the red and green LEDs inside the indicator are connected together internally. This common terminal connects to the positive supply, and you control the light by connecting the individual negative (-) leads for red and green to ground or a control signal.
Do I need to add an external resistor?
This unit comes fitted with a resistor, making it ready for direct connection to a 12V supply when wired correctly. An external resistor is typically not required unless your specific application involves unusual voltage fluctuations or specific current requirements beyond the integrated resistor's capability.
How do I switch between red and green lights?
You control which color illuminates by applying a voltage to the respective colored lead while the common anode lead is connected to the positive 12V supply. To turn off a color, simply disconnect or float its lead.
What is the recommended panel cut-out size?
The recommended panel cut-out size for this indicator is 8mm in diameter.
Can I use this indicator with a 24V power supply?
No, this indicator is designed specifically for 12V DC operation. Using it with a higher voltage, such as 24V, will likely damage the LED.
Is the metal housing waterproof?
The metal housing is durable for industrial use, and the included gasket helps provide a seal against dust and moisture ingress when properly installed on a panel. However, the entire unit is not rated as submersible.
What is the length of the prewired leads?
The indicator comes with prewired leads that are approximately 200mm (20cm or about 8 inches) in length.
Troubleshooting
LED does not light up.
Verify the 12V DC power supply is connected correctly and functioning. Check that the common anode lead is connected to the positive (+) terminal and the color leads are connected to the appropriate control signals. Ensure wiring is secure.
Only one color lights up.
Confirm that the control signal for the non-illuminating color is being sent correctly. Check the wiring for the specific color lead. Ensure the common anode connection is stable.
Intermittent lighting.
Inspect all wire connections for looseness or corrosion. Ensure the indicator is securely mounted to the panel.
LED burns out quickly.
Although fitted with a resistor, double-check that the operating voltage does not exceed 12V. Ensure the connections are not shorting.
Pros and Cons
Pros
- Provides clear visual feedback with two distinct colors.
- Durable metal housing withstands industrial environments.
- Built-in resistor simplifies wiring and component count.
- Standard 8mm panel mount size ensures broad compatibility.
- Includes a gasket for secure, sealed panel installation.
Cons
- Fixed 200mm lead length may require extensions for some applications.
- Common anode configuration might not be ideal for all circuit designs.
- Requires a 12V DC power source; not compatible with other voltages.
- Single-unit dual-color requires specific wiring to switch between colors.
Setup, Compatibility & Care
Setup:
- Determine the mounting location on your panel. Ensure an 8mm diameter hole is available or can be created.
- Insert the LED indicator through the panel hole. The gasket should be placed between the indicator housing and the panel surface for sealing.
- Secure the indicator from the rear using any provided mounting hardware (nut or clip, if applicable).
- Connect the prewired leads according to your circuit design. The common anode lead should connect to the positive voltage supply, and the individual color leads (red and green) should be connected to their respective control signals, potentially through current-limiting resistors if not internally matched to your circuit's requirements, though this unit features a fitted resistor.
Compatibility:
- Voltage: Compatible with 12V DC power sources.
- Panel Cut-out: Requires an 8mm diameter panel opening.
- Wiring: Designed for common anode configurations. Ensure your control circuitry is compatible.
Care:
- Clean the LED lens and metal housing with a soft, dry or slightly damp cloth. Avoid abrasive cleaners or solvents.
- Ensure connections remain secure to prevent intermittent operation.