1、Module wiring has common anode signal input, common cathode signal input, and differential signal input. 2、Using sophisticated production technology, and the limit switching frequency can be up to 20KHZ. 3、Can be used for signal isolation, level conversion between single‑chip microcomputer, PLC and other signals, PNP and NPN signal to NPN signal, signal level and voltage conversion, etc. 4、Made of high‑quality materials, this optical isolation module is sturdy, durable, not easily damaged, and has a long service life. 5、Has excellent performance, fast and stable signal conversion speed, high work efficiency and simple operation. 1 x Optical Isolation Module  Item Type: Optical Isolation ModuleLimit Switching Frequency: 20KHZUses: Can be used for signal isolation, level conversion between single‑chip microcomputer, PLC and other signals, PNP and NPN signal to NPN signal, signal level and voltage conversion, etcSize: Approx. 97 x 71 x 16mm / 3.8 x 2.8 x 0.6in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store