These neon indicator light bulbs come with built-in resistors for direct 220V AC use. Available in red, blue, and green, they are designed for main power indication in electrical appliances, switch panels, and industrial equipment. The set includes 10 bulbs in two sizes: 4x10mm and 5x13mm.

Each bulb has a long lifespan and low power consumption, making them a reliable choice for continuous operation. The built-in resistor simplifies installation by eliminating the need for external current-limiting components. Simply connect them to your 220V circuit for a clear visual indication of power status.

These bulbs are suitable for DIY electronics projects, repair work, or as replacements in existing equipment. The compact size allows them to fit into tight spaces on control panels or small devices. The bright neon glow provides a clear, easy-to-see indicator even in well-lit environments.

Choose between two sizes to match your panel hole diameter or mounting requirements. The 4x10mm bulbs are ideal for smaller indicators, while the 5x13mm bulbs offer a slightly larger and brighter display. Both sizes share the same voltage rating and resistor value for consistent performance.

Key Features and Benefits

- Built-in resistor for 220V AC that eliminates the need for external components and simplifies wiring

• Two size options (4x10mm and 5x13mm) that fit different panel hole diameters for flexible installation

• Three color choices (red, blue, green) that allow for clear status differentiation in multi-indicator setups

• Long operational life that reduces replacement frequency and maintenance costs

• Low power consumption that keeps energy usage minimal during continuous operation

• Compact design that fits into tight spaces on control panels, switches, and small devices

Who Is This For

- DIY electronics enthusiasts building or repairing power supplies, chargers, or audio equipment

• Technicians replacing failed indicator lights on industrial machinery or control panels

• Hobbyists creating custom switch panels or lighting projects for workshops or home labs

• Repair shops needing a reliable stock of common neon indicator bulbs for service calls

Usage Scenario

Mark was wiring a custom power distribution board for his home workshop. He needed a clear visual indicator to show when each circuit was live. These neon bulbs came with the resistor already built in, so he just drilled two holes in his panel, inserted a red bulb for the main power and a green bulb for the auxiliary circuit, and soldered the wires. The bulbs lit up immediately when he turned the power on, giving him a reliable status check at a glance.

Micro Comparison

Unlike standard LED indicators that require a separate resistor and careful polarity, these neon bulbs work directly with 220V AC and light up regardless of wiring orientation. They also produce a warmer, more traditional glow compared to LEDs, which some users prefer for vintage equipment or industrial aesthetics. The built-in resistor makes installation faster and reduces the number of components you need to stock.

Specifications

- Voltage: 220V AC

• Bulb sizes: 4x10mm and 5x13mm

• Colors available: Red, Blue, Green

• Resistor: Built-in

• Power source: Dry battery compatible (for testing), designed for AC mains

• Quantity per package: 10 pieces

• Luminous flux: 60-249 lumens (approximate)

Package Includes

- 10 x Neon indicator light bulbs (assorted sizes and colors as selected)

Why You Will Love It

These bulbs save you time and hassle because the resistor is already attached, so you can install them in seconds. The two sizes give you flexibility to fit different panel openings without buying separate packs. You get a reliable, long-lasting indicator that clearly shows when your equipment is powered on, giving you peace of mind during operation.

Questions and Answers

Question: Can I use these bulbs with 110V instead of 220V?

Answer: These bulbs are designed for 220V AC. Using them with 110V will result in a dimmer glow or no light at all.

Question: Do I need to add an external resistor?

Answer: No, each bulb has a built-in resistor. You can connect them directly to 220V AC without additional components.

Question: What is the lifespan of these neon bulbs?

Answer: Neon bulbs typically last for 20,000 to 30,000 hours of continuous use, depending on operating conditions.

Question: Are these bulbs polarized? Does it matter which wire goes where?

Answer: No, neon bulbs are not polarized. You can connect them in either direction on an AC circuit.

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

Answer: No, these bulbs are designed for 220V AC only. They will not work on 12V DC and may be damaged.