Features Module wiring has common anode signal input, common cathode signal input, and differential signal input. Using sophisticated production technology, and the limit switching frequency can be up to 20KHZ. 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. Made of high‑quality materials, this optical isolation module is sturdy, durable, not easily damaged, and has a long service life. Has excellent performance, fast and stable signal conversion speed, high work efficiency and simple operation. Specification: Item Type: Optical Isolation Module Limit Switching Frequency: 20KHZ Uses: 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 Size: Approx. 97 x 71 x 16mm / 3.8 x 2.8 x 0.6in Package List:1 x Optical Isolation Module  Note:1. This model is DST‑1RBP‑N (not including rail mounting frame). Model analysis: DST (digital signal converter)‑1R (one‑way transmission) 8P (8 channels)‑N (NPN output)2. How much V is the output signal, and how much V is used for the power supply of the module Package List 1 x Optical Isolation Module