SIEMENS 6ES7550-1AA01-0AB0 – TM Count 2x24V counter module | JUAL SIEMENS 6ES7550-1AA01-0AB0 – TM Count 2x24V counter module; SIMATIC S7-1500, TM count 2x 24 V counter module, 2 channels for 24 V incremental encoder or pulse encoder, 3 DI, 2 DQ per channel