Binary input for bus system 4-ch BE/S 4.20.2.1 - special offer

Binary input for bus system 4-ch BE/S 4.20.2.1 to connect the floating contacts with the ABB i-bus®KNX via an internal scanning voltage, four yellow LED´s to show the status of the input, up to four signals can be recorded, each channel can be reached via a push button - manual operation possible, DRA mounted, IP20