H-21D
The H-21D is a sewing machine working light with 22 SMD LEDs and knob-controlled brightness adjustment, drawing 2.5W. It operates on either 110V or 220V, so a factory or importer can stock one model for markets with different mains voltages. The 22 LED array provides focused illumination on the needle plate, suitable for general sewing tasks on light to medium fabric. The knob dimmer allows precise brightness control, which is useful when switching between fabric types or operator preferences. The lamp is designed for mounting on a machine head or arm where space is limited and hands are occupied.
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Technical Data
| Model | H-21D |
|---|---|
| Product | Sewing machine working light |
| Input Voltage | 110V/220V |
| Power | 2.5W |
| LED Quantity | 22 SMD LED |
| Brightness Adjustable | Yes |
| Means of Adjustment | Knob |
Why Buyers Choose This Model
Key Benefits
- 110V/220V operation means one model serves both voltage markets, reducing spare parts complexity
- 22 SMD LEDs deliver sufficient light for standard sewing tasks on light to medium fabrics
- Knob dimming allows fine adjustment to suit fabric colour and operator preference
- 2.5W power draw keeps energy cost low across a large sewing floor
- Compact design fits on tight machine heads without interfering with handwheel or thread path
- Fixed brightness setting can be locked by turning the knob to the desired level
Problems It Solves
- Overhead factory lighting casts shadows on the needle plate, making stitching difficult
- Fixed-brightness lamps are too harsh on light fabric or too dim on dark fabric
- Knob dimmers get sticky with lint and machine oil over time, leading to failure
- Stocking separate 110V and 220V lamps increases inventory and shipping complexity
- Lamps that cannot be adjusted to the right brightness cause eye strain and stitching errors
Who It Is For
- Garment factory maintenance managers replacing lamps on a full sewing floor
- Sewing machine dealers who install lights as part of a machine package
- Importers who want a single SKU for both 110V and 220V markets
- Sewing machine manufacturers specifying a standard task light for OEM fitment
Where It Is Used
- General sewing lines using light to medium fabric where overhead lighting is insufficient at the needle
- Factories with mixed 110V and 220V power supplies across different buildings
- Sewing machine dealers fitting lamps at installation for customers in different countries
- Home sewing and quilting stations needing a reliable, low-power task light
- Maintenance teams replacing bulbs or lamps on machines with no access to voltage converters
Technical Features
- 22 SMD LED array
- Knob-controlled brightness adjustment
- Dual voltage input of 110V/220V
- 2.5W power draw
- Compact lamp head with fixed mounting base
- Adjustable brightness across the full range
Materials
- SMD LED array on an aluminium-backed board for heat dissipation
- Moulded lamp head and knob housing
- Metal mounting base with screw holes for secure attachment
Quality Control
- Every lamp receives a 2-hour high-voltage test before it leaves the facility
- LED chips are sourced from world-known brands rather than unbranded stock
- Knob dimming function is tested across the full range on assembled units
- Visual check of the lamp head, cable, and mounting base before packing
Customisation Options
- OEM logo on the lamp head or knob housing
- Cable length and plug type to suit the destination market
- Own-brand retail or bulk packaging
- Mounting bracket variants for specific machine heads
How To Use It
- Mount the base on the machine head or arm using the provided screws, ensuring clearance from the handwheel and thread path
- Adjust the knob to the desired brightness level before starting work
- Use the lowest setting that clearly shows the stitch line to reduce eye strain
- Wipe the lens with a dry cloth to remove lint or oil; a dirty lens reduces effective brightness
- Verify the supply voltage matches either 110V or 220V before connecting the lamp
How It Is Made
LED board assembly and soldering
Driver and knob switch assembly
Lamp head and base fitting
Ageing and high-voltage testing
Packing
How It Compares
| H-10A 10 LED task light | The H-21D has 22 LEDs against 10, so it provides more light for detailed work or dark fabric. The H-10A is the lower-cost option for basic lighting needs. |
|---|---|
| H-36D 36 LED touch dimmable light | The H-21D uses a knob dimmer and 22 LEDs, which is simpler and lower cost. The H-36D has more LEDs and touch control, suited for high-precision or dark fabric work. |
| Overhead bay lighting | A machine-mounted lamp delivers light directly where the operator needs it, under the handwheel and needle plate, unlike overhead lights that cast shadows. |
Questions About This Product
Will the H-21D work on both 110V and 220V
Yes. The lamp is designed to operate on either 110V or 220V without a switch or adapter.
How is the brightness adjusted
By turning the knob on the lamp head. The operator can set and lock the brightness level.
What is the power draw of the H-21D
2.5W.
How many LEDs are in the H-21D
22 SMD LEDs.
Can we get the H-21D with our own logo and packaging
Yes. We offer OEM versions with your logo on the lamp head or knob and your own packaging.
What certification does the H-21D carry
Please ask us for the current certification documents for your market and we will send what applies to this model.
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Quote H-21D
Tell us the quantity, the branding you need and the market it is going to. We will confirm what applies and quote it.