Product Description
The AD16-22SM 22mm Flash LED Signal Indicator with Built-in Piezo Buzzer is a compact audio-visual warning device designed for industrial, commercial and domestic electrical control panels.
It combines a high-visibility flashing LED indicator and a built-in piezo buzzer in a single panel-mounted unit, allowing users to receive both visual and audible alerts from the same device.
Designed for a 220V AC supply and standard 22mm panel mounting, this signal indicator is suitable for compatible steam iron boiler control panels, industrial sewing machine control boxes, automatic water-level controllers, electrical distribution panels, machine-control cabinets and industrial automation equipment.
WHAT YOU GET
- 1 × AD16-22SM LED Indicator with Built-in Buzzer
- 22mm panel-mount configuration
- LED visual indicator
- Built-in piezo buzzer
- Suitable for compatible 220V AC applications
KEY FEATURES
Dual Audio-Visual Warning
The unit combines two warning functions in one compact device:
- Flashing LED light for visual notification
- Built-in piezo buzzer for audible notification
This makes it useful for machine alarms, water-level warnings, fault indication and equipment-status alerts.
High-Visibility Flashing LED
The bright LED provides a clear flashing visual signal that can be easily noticed from the machine operator’s position.
It is particularly useful in industrial environments where machinery, lighting and background activity can make conventional indicator lamps difficult to notice.
Built-in Piezo Buzzer
The integrated buzzer provides an audible alert to draw attention to the associated machine or control-panel condition.
- Low water level
- Machine fault
- Pump status
- Boiler alarm
- Emergency warning
- Equipment status
220V AC Operation
Designed for compatible 220V AC control-panel applications.
Always verify the actual voltage rating printed on the product before electrical connection.
Standard 22mm Panel Mount
The AD16-22SM is designed for a standard 22mm panel cutout, making it suitable for many industrial control panels and electrical enclosures.
Durable Housing
The indicator uses a durable, flame-resistant style housing suitable for demanding control-panel environments.
Screw-Terminal Connections
The rear connection arrangement allows convenient wiring in compatible electrical panels and control systems.
COMPATIBLE MACHINES & APPLICATIONS
The AD16-22SM can be used as an audio-visual signal device in a wide range of compatible equipment.
STEAM IRON BOILERS
Suitable for compatible:
- Industrial steam iron boilers
- Steam generators
- Garment pressing machines
- Boiler control panels
- Commercial steam ironing equipment
- Laundry pressing systems
INDUSTRIAL SEWING MACHINES
Suitable for compatible:
- Industrial sewing machine control boxes
- Sewing machine automation panels
- Machine fault indicators
- Motor-control panels
- Production-line warning systems
AUTOMATIC WATER LEVEL CONTROLLERS
- Automatic water-level controllers
- Overhead tank controllers
- Sump pump controllers
- Water-pump control panels
- Motor protection systems
For example, it can provide a visual and audible warning when a water-level controller detects a low-water condition, provided the controller’s output circuit is compatible.
INDUSTRIAL CONTROL PANELS
Suitable for compatible:
- Electrical control panels
- Machine-control cabinets
- Automation panels
- Distribution boards
- Pump control panels
- Motor control systems
- Industrial machinery
- Process-control equipment
MOUNTING COMPATIBILITY
22mm Panel Cutout
The indicator is designed for standard 22mm panel mounting.
It is suitable for control panels where the existing mounting hole matches the AD16-22SM/AD16 series dimensions.
Panel Thickness
Always verify the available panel thickness and threaded-barrel length before installation.
COMMON WARNING APPLICATIONS
Low-Water Alarm
Provides an audible and flashing visual warning when a connected water-level controller detects a low-water condition.
Boiler Alarm
Can indicate a boiler-related warning condition in compatible steam equipment.
Pump Warning
Can alert the operator when a pump-control system detects a fault or abnormal condition.
Machine Fault
Can provide an audio-visual indication when connected to a compatible machine fault circuit.
Power / Status Indication
Can be used as a visual status indicator for a compatible electrical circuit.
Emergency Warning
Can be integrated into suitable control systems requiring a flashing light and audible alarm.
HOW IT WORKS
The indicator operates as part of the machine’s electrical control circuit.
When the connected circuit provides the appropriate 220V AC supply, the device activates its warning functions according to its specific configuration.
The operator can then receive:
Electrical Signal → LED Flashing + Buzzer Alert → Operator Warning
The actual triggering condition depends entirely on the control circuit in which the indicator is installed.
PRODUCT SPECIFICATIONS
| Specification | Details |
|---|---|
| Product Type | LED Signal Indicator with Buzzer |
| Model | AD16-22SM |
| Series | AD16 |
| Mounting Diameter | 22mm |
| Supply | 220V AC |
| Indicator Type | Flashing LED |
| Alarm Type | Built-in Piezo Buzzer |
| Function | Audio-Visual Warning |
| Mounting | Panel Mount |
| Connection | Screw Terminal* |
| Pack Quantity | 1 Piece |
| Fabric Type | N/A |
*Verify the actual terminal configuration of the supplied unit before installation.
ADVANTAGES
The AD16-22SM provides several useful advantages for machine-control applications:
- Two warning functions in one unit
- Saves control-panel space
- Easy visual identification
- Audible warning for operator attention
- Standard 22mm panel mounting
- Suitable for industrial control panels
- Useful for water-level alarm systems
- Useful for steam boiler alarm systems
- Suitable for machine-status indication
- Easy replacement for compatible panel indicators
INSTALLATION
General installation:
- Disconnect the equipment from mains power.
- Confirm that no electrical voltage is present.
- Check the existing panel cutout.
- Verify the indicator’s voltage rating.
- Insert the indicator through the 22mm panel opening.
- Secure the rear locking collar/nut.
- Connect the wiring according to the machine’s electrical diagram.
- Check terminal tightness and insulation.
- Ensure the wiring cannot contact adjacent terminals.
- Restore power only after completing safety checks.
- Test the LED and buzzer functions.
Do not connect the indicator directly to a power source unless the supplied unit is specifically rated for that voltage and connection. Always follow the machine wiring diagram.
SAFETY INFORMATION
This product may be connected to 220V AC mains voltage.
For safe installation:
- Switch OFF mains power before wiring.
- Verify voltage before connection.
- Use correctly rated wires and terminals.
- Ensure proper insulation.
- Maintain proper earthing of the equipment.
- Do not exceed the product’s electrical rating.
- Do not install with damaged wiring.
- Keep the device away from direct water exposure unless the complete enclosure is appropriately protected.
FREQUENTLY ASKED QUESTIONS
What is the AD16-22SM?
The AD16-22SM is a 22mm panel-mounted LED signal indicator with an integrated piezo buzzer for audio-visual warning applications.
Does this indicator have both LED and buzzer?
Yes. It combines a flashing LED indicator and built-in piezo buzzer in one unit.
What voltage does it use?
This product is specified for 220V AC operation.
What size panel hole is required?
The indicator is designed for a standard 22mm panel cutout.
Can I use it on a steam iron boiler?
Yes, it can be used on a compatible industrial steam iron boiler or steam-generator control panel when the voltage and control circuit are suitable.
Can it be used for a low-water alarm?
Yes. It can provide an audio-visual low-water warning when connected to a compatible water-level controller or alarm circuit.
Can I use it with an automatic water-level controller?
Yes, provided the controller’s alarm/output circuit is compatible with the indicator’s electrical specifications.
Does the buzzer sound continuously?
The buzzer operation depends on the specific AD16-22SM variant and the electrical circuit controlling it. Verify the supplied unit’s specifications before installation.
Is the LED always flashing?
The LED is designed as a flashing signal indicator, but its exact operating behaviour depends on the specific product variant and wiring.
Can I use it in a domestic electrical panel?
It can be used in compatible domestic or commercial panels if the voltage, mounting dimensions, wiring and electrical load are appropriate.
What can this indicator be used for?
Common applications include:
- Boiler alarms
- Low-water alarms
- Pump warnings
- Machine faults
- Power/status indication
- Industrial equipment alerts
- Control-panel warnings
How do I know if it will fit my panel?
Check the panel cutout diameter, panel thickness, rear clearance and terminal arrangement before purchasing.
COMPATIBILITY CHECKLIST
Before ordering, verify:
- 22mm panel cutout
- 220V AC rating
- AD16/AD16-22SM series configuration
- Rear terminal arrangement
- Panel thickness
- Available mounting depth
- LED/buzzer function required
- Existing control-circuit voltage
