Feature:1. Bright Lighting: Using high brightness LEDs as the light source, the signal tower ensures good stability on vibrating machine.2. Three Color LED: Comes with 3 colour flashing lamp of red, yellow and green enables better warning in the dark, very reliable.3. Practical Using: Allows for wide application in industrial assembly lines, workshop machine tools, night traffic warning, etc.4. Strong Material: The ABS shell with high strength and toughness is flame retardant, very durable with corrosion and long uses.5. Foldable Design: Enables 180 degree folding, the stack light with light weight and small size can be mounted flat or side mounted.Specification:Item Type: Signal TowerMaterial: ABSTube Outer Diameter: 60mm / 2.36inOverall Length: 28mm / 1.1inLamp Colour: 3 colours, red, yellow, green. Voltage: 12-24V DC, universal. Buzzer: YesLighting Method: Flashing.Package List:1 x Signal TowerNote:Pay attention to electricity safety when using.