The Omron F3SG-4RE0910P30 is a Safety Light Curtains Global Light Curtain, Economy. It is designed to help provide safety and security in industrial applications. The curtain is comprised of an array of small, highly visible red light-emitting diodes (LEDs) with a diameter of 4mm. It can detect the presence of objects passing through the curtains with a range of up to 1.3 meters and a precision accuracy of 1mm. It is certified in accordance with UL, CSA, CE, IEC and EN standards. The F3SG-4RE0910P30 has a programmable response time setting and three modes of operation -- detection only, output only, and input/output. It includes a combination of output functions, including an alarm relay and open collector. It also features a high-frequency setting to help reduce sensing performance degradation due to dust or smoke.