... and easy Installation without tools. Long lifetime and brightness LED.Modular design for installation without tools.Patent design for advancing brightness ... red light modular, 24 VDC , Continuous lightening;2, 0550Y24L: 50 mm, yellow light modular, 24 VDC , Continuous lightening;3, 0550G24L: 50 mm, green light modular, 24 ... 250 mm stand , black. EMA 50/70mm Multi-Layer Light Tower (led light tower)