20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to

20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to 20pcs/lot XG infrared ST150 direct photoelectric slot beam switch single-beam optocoupler beam width 5mm slot sensor to