These compact neon indicator bulbs are designed for clear visibility on 220V circuits. Each bulb includes a built-in resistor for direct connection, making them a simple choice for power indicators, switch panels, and appliance status lights.

Available in two sizes (4x10mm and 5x13mm) and three colors (red, blue, green), this set gives you flexibility for different panel layouts. The small form factor fits standard indicator holders and the 220V rating matches common household and industrial voltage levels.

Each pack includes 10 bulbs, giving you extras for multiple projects or replacements. The construction is durable for long-term use in dry indoor environments. These are a practical, low-cost solution for adding or replacing status lights on equipment.

Key Features and Benefits

- Built-in resistor that simplifies wiring directly to 220V AC circuits

• Two size options (4x10mm and 5x13mm) that fit standard panel indicator holders

• Three color choices (red, blue, green) that provide clear visual status indication

• Compact neon bulb design that lasts for thousands of hours of continuous use

• 10-piece pack that gives you spares for multiple projects or replacements

Who Is This For

- Electronics hobbyists building or repairing control panels and power supplies

• Technicians replacing worn-out indicator lights on industrial equipment

• DIYers adding power-on indicators to custom electrical projects or appliances

• Maintenance staff servicing switchboards, distribution boxes, or machinery

Usage Scenario

Mark was troubleshooting a bench power supply that had a dead power indicator. The old bulb was a standard 4x10mm neon type. He ordered this 10-pack, swapped the old bulb with a new red one, and the power supply showed a clear status light again. He now has nine spare bulbs for future repairs on other equipment.

Micro Comparison

Compared to LED indicators, these neon bulbs do not require polarity-sensitive wiring and work directly on 220V AC without an external dropping resistor. They are also more resistant to voltage spikes than some LEDs. However, they produce a softer glow and consume slightly more power than a modern LED equivalent. For simple, reliable on/off indication at mains voltage, this is a cost-effective choice.

Specifications

- Type: Neon indicator bulb with built-in resistor

• Voltage: 220V AC

• Sizes available: 4x10mm and 5x13mm

• Colors: Red, Blue, Green

• Luminous Flux: 60-249

• Bulbs included: Yes

• Power Source: Dry battery (for testing) / Mains AC

Package Includes

- 10 x Neon Indicator Light Bulbs

Why You Will Love It

You get a full set of reliable indicator bulbs at a low cost per piece. The built-in resistor saves you the hassle of soldering extra components. With three colors and two sizes, you have the right bulb for almost any panel indicator need.

Questions and Answers

Question: Do these bulbs work on 110V or 120V circuits?

Answer: No, these are designed for 220V AC only. Using them on lower voltage will result in a very dim or no light.

Question: Do I need an external resistor?

Answer: No, each bulb has a built-in resistor. You can connect it directly to a 220V AC source.

Question: What is the diameter of the 4x10mm bulb?

Answer: The glass tube is 4mm in diameter and 10mm long. The 5x13mm bulb is 5mm in diameter and 13mm long.

Question: Can I use these for a 12V or 24V project?

Answer: No, they require 220V AC to operate properly. They will not light on low-voltage DC circuits.

Question: Are the wires attached or do I need to solder?

Answer: The bulbs come with wire leads attached, making them easy to connect by soldering or using wire connectors.