3SB3501-6BA70 is a 22 mm operation indicating light from the SIMATIC family of products made by Siemens. It is typically used in automation and control applications. This particular light is red and is capable of being wired as either DC or AC (power supply voltage rating of 240 VAC or 125VDC). It has an LED-based (non-replaceable) light source rated for a lifetime of 50,000 hours. The IP65 protection degree makes it suitable for both indoor and outdoor use, as it is resistant to dust and water jets. The 3SB3501-6BA70 is a reliable, cost effective solution for many of your automation needs.