Signal Tower Components

Signal tower components, often known as click-together beacon lamps, are used on different devices and machinery for drawing attention to warning messages and fault conditions by providing a signal / visual alarm.

How do signal towers work?

Signal tower components are used in a wide-range of applications to achieve multi-status signalling. They are commonly used by mounting together to make a tower of up to six modules high. These towers can be used as single indicators or used as sounder modules.

Different components of a signal tower

Every tower beacon consists of the following essential components:

Base units

The signal base unit is the bottom area of the signal tower. This part has a terminal block for installation, wiring, top cover and gasket in order to support the whole tower construction.

Light modules

Light modules come in different colours for different types of lamps or light modules, including LED, strobes, and incandescent lamps and send out a warning signal.

Audible Alarm Modules

Audible alarm modules are attached to the top area of a completed tower unit. These audible alarms act as a warning/ alert signal to users.


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Description Price Range Series Component Type Multifunction Current Type Light Effect Lens Colour Lamp Included Bulb Type Supply Voltage Minimum Decibel Maximum Decibel Height Base Diameter
RS Stock No. 314-7326
Mfr. Part No.840.080.00
BrandWerma
HK$337.19
Each
units
KombiSIGN 70 840 Termination - AC, DC - - - - 24 V dc, 230 V ac - - 30.5mm 70mm
RS Stock No. 314-7231
Mfr. Part No.842.100.68
BrandWerma
HK$827.85
Each
units
KombiSIGN 70 842 Beacon - AC Flashing Red - Xenon 230 V ac - - 65.5mm 70mm
RS Stock No. 293-9893
Mfr. Part No.XVBC34
HK$707.71
Each
units
Harmony Harmony XVB Beacon - AC Steady Red - Incandescent, LED 250 V - - 63mm 70mm
RS Stock No. 609-0936
Mfr. Part No.XVBC8B5
HK$2,995.84
Each
units
Harmony Harmony XVB Beacon - AC, DC Flashing Amber Yes Xenon 24 V ac/dc - - 157mm 70mm
RS Stock No. 436-2087
Mfr. Part No.XVBC2B7
HK$749.60
Each
units
Harmony Harmony XVB Beacon - AC, DC Steady Clear Yes LED 24 V ac/dc - - 63mm 70mm
RS Stock No. 455-3413
Mfr. Part No.640.800.00
BrandWerma
HK$275.98
Each
units
KombiSIGN 71 640 Termination - AC, DC - - - - 24 V dc, 230 V ac - - 26.5mm 70mm
RS Stock No. 436-2037
Mfr. Part No.XVBC2B3
HK$1,062.32
Each
units
Harmony Harmony XVB Beacon - AC, DC Steady Green Yes LED 24 V ac/dc - - 63mm 70mm
RS Stock No. 881-2797
Mfr. Part No.XVUC23
HK$399.38
Each
units
Harmony Harmony XVU Beacon - DC Steady Green Yes LED 24 V ac/dc - - 50mm 60mm
RS Stock No. 314-7354
Mfr. Part No.975.840.90
BrandWerma
HK$122.85
Each
units
- - Mounting Base - - - - - - - - - - -
RS Stock No. 818-3914
Mfr. Part No.171398 & SL7-BL230-R
BrandEaton
HK$993.57
Each
units
- SL7 Beacon - AC Flashing Red - LED 230 V ac - - 61mm 73mm
RS Stock No. 481-941
Mfr. Part No.640.820.00
BrandWerma
HK$231.03
Each
units
KombiSIGN 71 640 Termination - - - - - - 24 V dc, 230 V ac - - 26.5mm 70mm
RS Stock No. 294-0348
Mfr. Part No.XVBC9B
HK$938.09
Each
units
Harmony Harmony XVB Buzzer Element - DC - - - - 24 V ac/dc 70dB 90dB 63mm 70mm
RS Stock No. 814-8649
Mfr. Part No.XVBC4B3
HK$1,449.42
Each
units
Harmony XVB Universal XVBC Indicator Bank - AC, DC Flashing Green - LED 24 V ac, 24 → 48 V dc - - 63mm 70mm
RS Stock No. 814-6823
Mfr. Part No.XVBZ02A
HK$305.69
Each
units
- Harmony XVB Support Tube with Base - - - - - - - - - - -
RS Stock No. 700-9199
Mfr. Part No.843.380.55
BrandWerma
HK$1,625.59
Each
units
KombiSIGN 70 843 Beacon - DC Steady Yellow - LED 24 V dc - - 65.5mm 70mm
RS Stock No. 700-9186
Mfr. Part No.843.180.55
BrandWerma
HK$1,625.59
Each
units
KombiSIGN 70 843 Beacon - DC Steady Red - LED 24 V dc - - 65.5mm 70mm
RS Stock No. 436-2043
Mfr. Part No.XVBC2B4
HK$1,729.85
Each
units
Harmony Harmony XVB Beacon - AC, DC Steady Red Yes LED 24 V ac/dc - - 63mm 70mm
RS Stock No. 455-3205
Mfr. Part No.641.400.00
BrandWerma
HK$184.22
Each
units
KombiSIGN 71 641 Beacon - AC, DC Steady Clear - - 12 - 230 V ac/dc - - 65mm 70mm
RS Stock No. 315-8865
Mfr. Part No.975.840.85
BrandWerma
HK$109.67
Each
units
- - Single Sided Mounting Bracket - - - - - - - - - - -
RS Stock No. 481-939
Mfr. Part No.644.320.55
BrandWerma
HK$996.01
Each
units
KombiSIGN 71 644 Beacon - DC Flashing Yellow - LED 24 V dc - - 65mm 70mm