The 6AG1052-1HB08-7BA2: This is the SIPLUS variant of the standard LOGO! 24RCE (6ED1052-1HB08-0BA2) with conformal coating, rated for -25 °C to +60 °C operation and startup down to -20 °C. The conformal coating handles condensation, dust, and mild chemical exposure in non‑climate‑controlled cabinets. You get the same 24 V AC/DC supply, 8 digital inputs, 4 relay outputs, and 400-block memory as the base unit, plus Ethernet with integrated web server and MQTT support for cloud connectivity.
What the Coating Means for the Signal Path
The conformal coating isn't just a sticker — it prevents leakage current across the PCB under high humidity, which is the usual suspect for erratic inputs in damp environments. The 24 V DC rail has enough headroom to stay clean through a dirty supply; the relay outputs provide galvanic isolation from the logic side, so noise from the load circuit doesn't couple back into the processor. If you're replacing a standard LOGO! that failed from moisture tracking, this version directly addresses the root cause.