S7-1200 expansion module with 16 digital inputs 24VDC type outlet / source.

Catalog number: 6ES7221-1BH30-0XB0.

Specification
Supply voltage:
Permissible range, lower limit (DC): 20.4 V
Permissible range, upper limit (DC): 28.8 V
Input current from backplane bus 5VDC: 130 mA
Power loss: 1.5W
Number of digital inputs: 16 in groups of 4
Output voltage (Power supply to the transmitters): Yes
Input voltage:
Rated value (DC): 24 V
For signal "0": 5 VDC at 1 mA
For signal "1": 15 VDC at 2.5 mA
Input current:
For signal "0", maks. (Permissible quiescent current): 1 mA
For signal "1", min: 2.5 mA
For signal "1", typ: 4 mA

General technical parameters
I/O	16x digital inputs
Industrial grade
Input voltage	24VDC

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