What this module is – and why you'd specify it
The Siemens 6AG1052-1FB08-7BA0 is the SIPLUS extended-temperature variant of the standard LOGO!-8 base module, built for environments where the standard 0–55 °C range won't hold. It provides 8 digital inputs and 4 relay outputs in a 4-spacing-unit (71.5 mm) DIN-rail package, with an on-board display and a 480-hour power reserve that keeps logic alive during line dips. The relay outputs are rated 10 A resistive and 3 A inductive, and the module accepts both AC and DC supply voltages from 100 V to 253 V, 47–63 Hz.
Mounts on 35 mm DIN rail, 4 spacing units (71.5 mm × 90 mm × 60 mm). Supply 100–253 V, 47–63 Hz; 8 digital inputs; relay outputs need external short-circuit protection. IP20 enclosure.