Features Volt Converter: Able to convert 24V to 5V, the optocoupler isolator guarantees stable working performance. Efficient Work: 20KHz limit conversion frequency ensures high work efficiency, practical and reliable. Extensive Uses: Can be used for signal isolation, PLC signal level conversion, PNP to NPN conversion, etc. Great Material: Adopting high quality PCB material, the 4 channel signal converter is very durable for use. Easy to Install: Light in weight and compact in size, the convenient installation is very quick to complete. Specification: Item Type: Optocoupler Isolation Board Material: PCB Channels: 4 Conversion: 24V to 5V Package List:1 x Optocoupler Isolation Board Package List 1 x Optocoupler Isolation Board