Siemens 5WG1 372-5EY01 Instabus EIB 4-Channel Time Switch

Siemens 5WG1 372-5EY01 Instabus EIB 4-Channel Time Switch is a DIN-rail mounted REG 372 timer module for KNX/Instabus networks, delivering four independent channels and an annual (Jahresprogramm) scheduler to automate load control across the year. Each channel supports standard KNX/EIB telegrams: On/Off (1 bit) for basic switching, a 2‑bit positive‑drive telegram, and an 8‑bit value telegram (EIS 6) for value‑based commands such as scenes or parameterized signals. The EY01 variant carries the order number 5WG1 372-5EY01, with Siemens also offering a REG 372/02 EY02 variant (5WG1 372-5EY02) that provides the same four channels with an alternate time base based on DCF77 time synchronization. Installation is intended on a DIN rail (EN 60715 TH35-7.5) with mounting instructions and front‑display configuration where applicable, as shown in Siemens technical documentation. As part of the instabus EIB/KNX timer family, this 4‑channel time switch is designed for building automation tasks requiring year‑round scheduling of multiple loads—ideal for coordinating lighting, shading, or other controlled circuits across the year while remaining integrable with other KNX devices.