This is a 22 mm panel-mount LED indicator combined with an integrated active buzzer — it lights AND beeps when energized, designed for fault alarms, machine status alerts, and process-monitoring panels where a visual indicator alone is insufficient. AD16-22SM form factor, four colors (red/yellow/green/black), four voltages (12 V / 24 V / 110 V / 220 V), CE certified.
Product Description
This is a combined LED indicator and active buzzer in a single 22 mm panel-mount housing. When energized, the lamp emits both a visible light AND an audible alarm tone simultaneously — the operator notices the alert even when not facing the panel. The active buzzer means the tone is generated internally; you do not need to feed an external square wave to make it sound. Apply the rated voltage and it lights and beeps; remove voltage and it goes silent.
This is the right product for fault alarms, machine cycle-end signaling, hazardous condition warnings, and any monitoring application where a silent visual indicator could be missed. It is wrong for applications where you want to indicate a steady-state condition without sound (use a silent panel LED indicator instead).
Key Benefits
- Combined visual + audible alarm in a single 22 mm panel device — no two-lamp install needed
- Active buzzer means no external oscillator or driver — wire directly to power
- Four colors (red, yellow, green, black) cover fault, warning, normal, and discreet alarm conventions
- Four voltage variants (12 V, 24 V, 110 V, 220 V) cover logic and mains use
- Standard 22 mm cutout fits any industrial panel that already has 22 mm hole positions
Key Features
The defining feature is the integration of LED + active buzzer into a single 22 mm panel cutout, which solves a common control-panel problem: when you want both an audible alarm AND a corresponding visual indicator, you would normally need two panel cutouts (one for a lamp, one for a buzzer) wired in parallel. This product collapses both functions into a single hole, reducing panel real estate and wiring complexity. The buzzer tone is suitable for industrial workshops where ambient noise is moderate — high enough to cut through, not piercing enough to be painful.
Technical Specifications
The defining parameters are the integrated LED + active buzzer combination, the 22 mm panel cutout, and the AD16-22SM form factor. Full specs below.
| Parameter | Value |
|---|---|
| Function | LED indicator + active buzzer combined (light + sound when energized) |
| Panel cutout diameter | 22 mm (fixed) |
| Operating voltage | 12 V DC, 24 V DC, 110 V AC, or 220 V AC (selectable per variant) |
| LED color | Red, yellow, green, or black housing (selectable per variant) |
| Operating current | ≤ 20 mA (LED component) |
| Buzzer type | Active (self-oscillating, no external driver needed) |
| Luminous flux | < 60 lumens |
| Body material | PC (polycarbonate) |
| Form factor | AD16-22SM standard |
| Certification | CE |
| Internal SKU | 54G-IND-LED-004 |
Technical data sourced from manufacturer documentation.
What's Included
- 1 x AD16-22SM combined LED + buzzer indicator (per selected color and voltage variant)
Compatibility & Applications
This combined indicator fits any panel with a 22 mm cutout and any power source matching the selected voltage. Typical applications include:
- Industrial machine fault alarms (overload, jam, end-of-cycle)
- Process monitoring panels where alerts must be heard from across the room
- Fire panel and security panel auxiliary alarms
- Telecom and IT equipment fault status with audible alert
- Marine and naval signaling panels
Not suitable for: applications requiring a silent indicator (use a regular panel LED instead), 380 V three-phase mains (use a 380 V-rated indicator), submerged installations, or applications where the buzzer must produce a specific frequency or melody (this is a fixed-tone active buzzer).
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 make the buzzer go silent and keep just the light?
No. The LED and the buzzer are wired internally to the same power input — they activate together. If you need a silent indicator, buy the standard panel LED indicator (without buzzer) instead. If you need to silence the alarm temporarily, you would need to add an external relay or switch in series with the entire device.
What does "active buzzer" mean?
Active means the buzzer has its own internal oscillator — you apply DC or AC at the rated voltage and it produces a continuous tone. You do not need to feed it a square wave or pulse signal. Passive buzzers, by contrast, need an external driver to make them sound. Active buzzers are simpler to wire and the right choice for fault-alarm applications.
How loud is the buzzer?
The active buzzer is sized for typical industrial workshop noise levels — audible across a moderately noisy space without being painful at close range. It is not a siren or evacuation alarm; for those applications you want a dedicated 100 dB+ industrial siren.
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 combined indicator compare to others in its category?
Within the panel-mount LED + buzzer category, the meaningful comparison points are voltage range, color range, and integration depth. This product combines a standard AD16-22 form factor with an active buzzer that requires zero external driving — the configuration that fits the broadest set of fault-alarm 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.
