Siemens ET 200S Manual page 298

Digital Electronic Modules
11.6 4DI 24 VDC High Feature Digital Electronic Module
(6ES7 131-4BD00-0AB0)
Order Number
6ES7 131-4BD00-0AB0
Features
S Digital electronic module with four inputs
S Rated input voltage 24 VDC
S Suitable for switches and proximity switches (BEROs)
11-22
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07