GL220-RT/32/40a/98a. Photoelectric slot sensor, aluminum housing, 220 mm slot width, red light, light/dark on, sensitivity adjuster, DC version, PNP output, 3 pin M8 plug. Optimized for the detection of small parts. High switching frequency. Multiple device installation possible, no mutual interference (no cross-talk). Sensitivity adjuster and light-on/dark-on changeover switch as standard features of this series. Visible red light. Degree of protection IP67. cULus approval. Sturdy aluminum housing. Self configuration in redundant systems. Permanently self-monitoring