Siemens 6FC5403-0AA20-1AA1 Hand Terminal HT 8

Siemens SINUMERIK HT 8 Handheld Terminal (6FC5403-0AA20-1AA1) is a portable SINUMERIK interface featuring a 7.5-inch color TFT display with VGA resolution (640 × 480) and a handheld wheel for intuitive control. It runs from a 24 V DC supply and draws up to 13 W of active power, while its IP65-rated enclosure protects the unit from dust and water ingress in demanding industrial environments. The 6FC5403-0AA20-1AA1 variant is the “with hand wheel” HT 8 model listed by Siemens, with the alternative 6FC5403-0AA20-0AA1 described as without a hand wheel in Siemens NC62 catalogs. The product’s IEC 60721-3-3 rating notes condensation and icing are excluded, aligning it with typical factory operation conditions. This handheld terminal is designed to operate as a compact, accessible interface for SINUMERIK CNC systems, enabling on-the-go data entry and monitoring on tooling and production lines.