1Module connection has common anode signal input, common cathode signal input, and differential signal input. 2Using sophisticated production technology, and the limit switching frequency can be up to 20KHZ. 3Has excellent performance, fast and stable signal conversion speed, high work efficiency and simple operation. 4Made of highquality materials, this optical isolation module is sturdy, durable, not easily damaged, and has a long service life. 5Wide range of uses, can be used for signal isolation, level conversion between singlechip, PLC and other signals, PNP, NPN to NPN. Item Type: Optical Isolation ModuleLimit switching frequency: 20KHZ.Module Size: Approx. 85 x 97 x 40mm / 3.3 x 3.8 x 1.6in (Length x Width x Height) 1 x OpticalIsolationModule 1. This model is DST1RBPN (not including rail mounting frame). Model analysis: DST (digital signal converter)1R (oneway transmission) 8P (8 channels)N (NPN output).2. The output signal is a few V, and the module power supply uses a few V.