This is a fixed 16 mm panel-mount LED indicator lamp, available in five colors and five voltages, ideal for compact instrument panels and small enclosures where 22 mm cutouts are too large. Drop-in replacement for AD16-16DS form factor, current draw under 20 mA, CE certified PC body.
Product Description
This is a panel-mount LED pilot indicator with a fixed 16 mm mounting cutout diameter, intended for compact control panels, instrument enclosures, and small DIY projects where the larger 22 mm or 30 mm panel sizes are too big. The lamp is a single-purpose device: drill or punch a 16 mm round hole in your panel, drop the lamp through, secure with the threaded ring on the back, and wire to your selected voltage rail.
Five voltage variants are available (12 V DC, 24 V DC, 110 V AC, 220 V AC, 380 V AC) and five colors (red, green, blue, yellow, white). Each voltage variant ships with the appropriate driver circuitry built in, so no external resistor or current limiter is needed. Body is PC plastic with a CE-certification mark, and the LED draws under 20 mA, which means a single panel can host dozens of these without meaningful current budget impact.
Key Benefits
- Fixed 16 mm cutout fits compact panels where 22 mm is too large
- Five voltage options (12 V / 24 V / 110 V / 220 V / 380 V) cover logic to mains use
- Five colors follow IEC 60073 indicator conventions for stop, go, warning, info, reset
- Built-in driver circuit — no external resistor required
- Sub-20 mA current draw makes multi-lamp panels practical
Key Features
The defining feature is the dedicated 16 mm panel cutout sizing. Many DIY enclosures (project boxes, instrument cases, small control consoles) come pre-drilled or pre-punched at 16 mm because that is the most common compact panel cutout standard alongside 22 mm. Choosing this fixed-size variant means you do not pay for the multi-size variant kit and you get a precision fit straight out of the package. The PC plastic body is dimensionally consistent across batches, so panel cutouts that fit one of these will fit replacements indefinitely.
Technical Specifications
The defining parameters are the fixed 16 mm panel cutout, the five-voltage variant matrix, and the sub-20 mA LED current draw. Full specs below.
| Parameter | Value |
|---|---|
| Panel cutout diameter | 16 mm (fixed, not adjustable) |
| Operating voltage | 12 V DC, 24 V DC, 110 V AC, 220 V AC, or 380 V AC (selectable per variant) |
| LED color | Red, green, blue, yellow, or white (selectable per variant) |
| Operating current | ≤ 20 mA |
| Light source | Solid-state LED with integrated driver |
| Body material | PC (polycarbonate) |
| Mounting type | Panel-mount with threaded back ring |
| Form factor | AD16-16DS standard |
| Certification | CE |
| Internal SKU | 54G-IND-LED-002 |
Technical data sourced from manufacturer documentation.
What's Included
- 1 x 16 mm panel-mount LED indicator lamp (per selected color and voltage variant)
Compatibility & Applications
This indicator fits any panel or enclosure with a 16 mm circular cutout, paired with a power source matching the selected variant voltage. Typical applications include:
- Compact instrument panels (handhelds, bench meters, audio gear)
- Small control panels for DIY power supplies and automation projects
- Distribution panel "power on" or "breaker tripped" indicators
- Educational electronics kits and student projects
- Replacement lamps for legacy AD16-16DS form-factor installations
Not compatible with: 22 mm or larger panel cutouts, voltages outside the 12/24/110/220/380 V supported set, fully submerged use (the housing is not rated IP67/IP68), or applications requiring more than 20 mA per lamp.
Why Trust Us
Operated for 5+ years across 35+ countries by a UK-incorporated company specializing in renewable energy and small-electronics components. Every order ships with tracked delivery, a 30-day return window, and a manufacturer-backed warranty against defects. Technical questions are answered by email at info@54energy.net. Last updated: May 2026.
Frequently Asked Questions
Can I use this lamp in a 22 mm cutout?
No. The mounting threads, body diameter, and back ring are all sized specifically for a 16 mm panel cutout. For 22 mm cutouts you need a 22 mm variant. If your panel is unmarked, measure the existing hole with a caliper before ordering.
Do I need a current-limiting resistor?
No. Each voltage variant ships with the appropriate driver circuitry built in. Wire it directly to your selected voltage rail. Make sure the variant voltage exactly matches your supply — a 12 V variant on a 24 V rail will fail; a 24 V variant on a 12 V rail will be too dim or not light at all.
What does AD16-16DS mean?
AD16-16DS is the industry-standard form-factor designation for a 16 mm panel-mount LED indicator. The "AD16" denotes the family, "16" the cutout diameter, and "DS" the LED variant. This product follows that standard, so it is dimensionally interchangeable with any other AD16-16DS lamp.
How fast does shipping take?
Orders are dispatched from regional fulfillment partners in North America, Europe, and Asia. Typical delivery is 5 to 15 business days depending on destination country, with tracked shipping included. Specific timelines per destination are listed in the Shipping Policy.
How does this 16 mm indicator compare to others in its category?
Within the 16 mm panel indicator category, the meaningful comparison points are voltage range, color range, and form-factor compatibility. This product offers five voltages, five colors, and standard AD16-16DS dimensions — the configuration that fits the largest installed base of compact-panel applications and drives the lowest return rate within our control-component category.
Can I request a quote or estimate?
No need to request quotes or estimates. You can purchase all products online directly on our website. Accepted payment methods are credit card, debit card, and Apple Pay, processed securely via Stripe.
