Icstation 4 Channel Voltage Level Translator Opto Isolator Board PNP NPN PLC Signal Converter Module 24V to 5V 4 channel 24V to 5V opto isolator board used for MCU/PLC signal level converting,PNP/NPN to NPN Each channel equipped with indicator easier to recognise working status Maximum Conversion Frequency:20KHz, Board Size:72 X 55 X 18mm/2.83 X 2.17 X 0.71(L*W*H) Mounting Hole Pitch:64X47mm,Hole Diameter 3mm Ship it out by USPS with tracking information and 7-17 days delievery time usually Type: 24V to 5V Channel:4 Maximum Conversion Frequency: 20KHz Board Size: 72X55X18mm(L*W*H) Mounting Hole Pitch :64X47mm Hole Diameter: 3mm signal isolation MCU/PLC signal level converting PNP/NPN signal to NPN signal signal level voltage converter