... IP54,IP60550RYGZ24S25BL is assembled by the following part:1, 0550R24L: 50 mm, 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 VDC , Continuous lightening;4, 0550Z24FB : 50 mm, 100 dB buzzer, ...