6ES72121 Series

Part	Approval Agency	Voltage - Supply [Max]	Voltage - Supply [Min]	Number of Outputs and Type [custom]	Number of Outputs and Type [custom]	Number of Inputs and Type	Number of Inputs and Type	Display Type	Memory Size	Mounting Type	Expandable	Voltage - Supply	Communications	Features	Number of Outputs and Type [custom]	Number of Outputs and Type	Number of Inputs and Type [custom]	Number of Inputs and Type [custom]	Ingress Protection	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs and Type	Number of Outputs and Type
Siemens 6ES72121HF400XB0	CE cULus FM KC RCM	28.8 VDC	20.4 V	6	Relay	8	Digital	No Display	100 kB	Panel Mount
Siemens 6ES72121BE344YB0								No Display		DIN Rail	Expandable	24 V	Ethernet	Starter Kit
Siemens 6ES72121HF424YB1								No Display		DIN Rail	Expandable	24 V	Ethernet	Starter Kit	4	Relay	16	Digital
Siemens 6ES72121AE400XB0		28.8 VDC	20.4 V			8	Digital	No Display	75 KB	Panel Mount									IP20	-20 ░C	60 °C	6	4
Siemens 6ES72121HE400XB0	CE cULus FM KC RCM UL	28.8 VDC	20.4 V	6	Relay	8	Digital	No Display	75 KB	Panel Mount									IP20	-20 ░C	60 °C
Siemens 6ES72121AF400XB0	CE cULus FM KC RCM UL	28.8 VDC	20.4 V			8	Digital	No Display	100 kB	Panel Mount									IP20			6	4
Siemens 6ES72121BE400XB0	CE cULus FM KC RCM UL	264 VAC	85 VAC/DC	6	Relay	8	Digital	No Display	75 KB	Panel Mount									IP20	-20 ░C	60 °C