BL20 Economy Module. 4 IO-Link Master Channels, 16 Bytes of I/O Data. 4 Configurable Digital Channels, PNP, Channel Diagnostics, 0.5 A. Ident. no.: 6827385. Fieldbus-independent. Electronics and connection technology in one housing. Connectivity: Push-in terminals. Protection class IP20. LEDs indicate status and diagnostic. Electronics galvanically separated from the field level via optocouplers. IO-Link master acc. to specification V1.1, 4-channel. 4 universal digital channels, PNP, channel diagnostics, 0.5 A