What variants does the AD16 indicator light series include?
The AD16 series is based on the AD16-22DS short-body LED indicator for Φ22 mm panel cutouts. Four functional variants are available: the standard AD16-22DS, the AD16-22DS/F discharge type, the AD16-22DS/K anti-EMI type, and the AD16-22SM flashing buzzer type. Use the standard model for normal status indication, /F where residual voltage needs discharge support, /K in noise-sensitive cabinets, and 22SM where the operator needs both visual flash and audible alarm.
How do I select the correct lamp voltage?
Connect the indicator lamp to the actual control or signal circuit voltage. Common selections include AC/DC 6V, 12V, 24V, 36V, 48V, 110V, 220V, and AC 380V. PLC panels often use 24V DC, while power-distribution boards may need direct 220V or 380V indication. Confirm AC or DC, because the wrong voltage can leave the LED dim, overheat the lamp, or shorten service life.
Does AD16-22SM include a contact block for mute or test functions?
AD16-22SM combines a flashing LED and piezo buzzer in one Φ22 mm unit. It includes a 1NO contact block so a panel builder can wire an external push-to-silence or push-to-test function. AD16-22M is the continuous buzzer version without LED indication. Both should be ordered with the same supply voltage as the alarm circuit.
What does the WB suffix mean in AD16-22D/WB models?
WB indicates a double-hole or dual-lens indicator body. It lets two independent LED colours share one panel opening, such as white for auto mode and blue for manual mode. Use WB when panel space is limited but two status signals must be visible from the same operator position.
What colours follow IEC 60073 recommendations for indicator lamps?
IEC 60073 is commonly used as the colour-function reference for panel indicators. Red normally signals danger, stop, or abnormal status; green indicates safe, running, or normal status; yellow is used for caution or warning; white is neutral; and blue is used for mandatory action or information. AD16 red, green, yellow, white, and blue lenses can be mapped to those functions.
Are AD16 indicators interchangeable with other 22 mm brands?
AD16-22D and AD16-22DS use the common Φ22 mm panel cutout, so they can often replace other 22 mm pilot lights in control cabinets. Before approving a substitution, compare the rear body length, nut diameter, gasket condition, terminal orientation, lamp voltage, and required front protection rating.
What should I send for a fast AD16 quotation?
Send the model or function type, cutout size, lamp voltage, colour, quantity, target certification market, and any project constraints such as anti-EMI requirements, discharge indication, buzzer alarm, or higher front sealing. For replacement projects, a photo of the existing indicator front and rear terminals helps confirm compatibility faster.