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Authorized WERMA distributor · new units · manufacturer warranty

WERMA stack lights, beacons & signal horns

Choose by device, voltage and colour, or search by article number (644.100.75 or 64410075).

1,477 parts

Shop by device

Start with what the machine needs to signal.

Also from WERMA:Accessories & replacement bulbs(180 parts)AndonWireless & WIN systems(9 parts)

Parts list

1,477 parts

Showing 24 of 1,477 parts

Build a KombiSIGN tower

A stack light is four parts. Choose them in this order.

  1. Mounting base

    Base, wall or tube mount, in the same series as the elements. WERMA does not publish cross-series compatibility, so keep one series per tower.

  2. Light and sound elements

    Up to five tiers on KombiSIGN 40 and 72: steady, flashing, EVS or rotating light, plus a siren or buzzer element. Red on top, then yellow, then green is the usual order.

  3. Terminal element

    Closes the stack and takes the control voltage: 24V AC/DC, 115V AC or 230V AC, with cable or M12 options.

  4. Connection & spares

    Cable or M12 plug, cap and spare bulbs. Send us the machine signal list and we will quote the full tower.

Already have the article numbers for your tower? Send them to us and we quote within one business hour.

Stack light colours

What each colour means on a machine (IEC 60204-1).

  • Red · emergency

    Dangerous condition or fault. Act immediately.

  • Yellow · abnormal

    Warning: an operator should check soon.

  • Green · normal

    Machine running as intended.

  • Blue · mandatory

    An operator must act, for example reload or reset.

  • White · neutral

    General information not covered by the other colours.

Andon systems use the same colours to call help to a station. WERMA’s wireless andon range adds call buttons and remote monitoring.

Compare the series

WERMA stack light series at a glance.

WERMA stack light series at a glance.
SeriesDiameterBuildLightSoundProtection
KombiSIGN 7270 mmModular elementsLED TwinLIGHT / TwinFLASHNot applicableIP65
KombiSIGN 7170 mmModular elementsLED steady, flashing, EVS, rotating; xenonBuzzer elementIP65
KombiSIGN 7070 mmModular elementsSteady, flashing, xenon strobeSiren element (8 tones)IP54
KombiSIGN 5052 mmModular elementsLED steady, blinking, flashingBuzzer elementIP54
KombiSIGN 4040 mmModular elementsTwinLIGHT, EVS multi-modeSiren element (4 tones)IP66 · IP69K
KOMPAKT 3738 mmPre-assembledLED steadyPulse tone optionIP65

Not sure which series fits? Send us the article number on your existing tower or a photo of it.

Send us your tower spec

WERMA software

Turn your signal towers into live machine status.

WERMA WeASSIST reads the signals your towers and call buttons already produce and shows machine status, downtime and open requests in one dashboard. Supplied and supported by IAC, an authorized WERMA distributor.WeASSIST turns WERMA signal towers and call buttons into live machine status, downtime analysis and alerts.

Explore WeASSISTRequest a WeASSIST quote
WERMA WeASSIST dashboard showing machine status and analytics

Questions before you order WERMA signalling?

Straight answers on series, colours, voltage and ordering.

What IP Rating Do I Need for a WERMA Beacon?
Our WERMA stock spans IP30 through IP66/IP69K. IP65 is the most common rating in the line and suits general indoor and covered outdoor machine mounting. Choose IP66 for direct hose-down or heavy dust, and the IP69K-rated units for the high-pressure, high-temperature washdown found in food and beverage plants.
Are WERMA Devices UL Listed for North American Panels?
Most of the range is. Of the WERMA products we hold full compliance data for, 205 carry UL listing, and 190 of those are rated UL Type 12 for dust-tight and drip-tight enclosure duty, with a smaller group rated Type 4X for corrosion and washdown service. CE, RoHS and WEEE apply across the line.
What Supply Voltages and Sound Levels Are Available?
Supply voltages run from 12 V to 230 V, with 24 V the most common and much of the range accepting AC or DC on the same terminals. Wide-range 12-230 V and 115-230 V units are also stocked. On the audible side, sounders and sirens produce 80 to 120 dB(A) at 1 meter, and multi-tone models offer selectable tone sets of 2, 8, 10, 32 or up to 42 tones.
Can I Replace Just the Lamp or Mounting Instead of the Whole Beacon?
Often, yes. We stock WERMA replacement lamps and bulbs alongside mounting adapters, brackets and bases, so a failed lamp or a change from base mount to pipe or wall mount does not always mean buying a new device. Match the bulb base and the housing series before ordering, and check the datasheet on the product page if you are unsure.
Do WERMA Parts Qualify for Two-Day Shipping?
In-stock parts do. Every WERMA product we carry weighs under 5 lbs, so in-stock orders fall inside our under-20 lbs two-day shipping window within the continental United States. For parts that are not in stock, we quote the lead time before you commit. For an urgent need on an in-stock part, contact us and we may be able to coordinate same-day courier service.
How Do I Request a Quote on WERMA Products?
We have several ways to request a quote on our industrial replacement parts. Click the Request Quote button on any WERMA product you would like to order. You can also contact us by email or phone to receive a quote on one or more of our industrial automation products. During business hours, we generally provide quotes in ten minutes or less.
How Do I Place My Order for WERMA Products?
Place an order for WERMA signal devices by calling our toll-free number at 1-877-PARTS-57 (727-8757). You may also send purchase orders online by emailing us at sales@industrialautomationco.com. We recommend calling us to get quotes and shipping information on your parts for all first-time orders.

Why buy from an authorized distributor

What “authorized” gets you on every WERMA order.

  • Genuine, new, sealed

    Every part comes through WERMA’s authorized supply chain, not the surplus market.

  • Manufacturer warranty, handled by us

    Every new WERMA part carries the manufacturer’s warranty. Extended cover is available on eligible items over $200.

  • Factory support and licensing

    Parts carry WERMA’s standard support and software licensing, as set out in our warranty terms.

  • Quotes within one business hour

    Not in stock? We quote the lead time before you commit.

Can’t buy the part you need online right now? Request a quote and we confirm price and lead time before you commit.

Guides from Industrial Automation Co.

Background reading for panel builders and maintenance teams.

Need a WERMA tower or beacon today?Can’t find your part?

Request a quote, call 877-727-8757 or email sales@industrialautomationco.com.

Request a quote