Schneider Electric SR2B201BD Compact Smart Relay

Schneider Electric SR2B201BD Zelio Logic Compact Smart Relay is a DIN-rail mounted 24 V DC programmable controller that provides 20 I/O, including 8 relay outputs, in a compact footprint for small automation tasks. It features a built‑in local display and clock for diagnostics, and supports ladder programming up to 120 rungs or up to 200 lines of function block (FB) programming, enabling both straightforward and structured logic. The unit delivers cycle times from 6 ms to 90 ms, preserves the program in memory with a backup life of 10 years at 25°C, and offers clock drift of about 6 seconds per month at 25°C (and 12 minutes per year across a 0–55°C range). It operates on a rated 24 V supply with a control voltage range of 19.2–30 V and uses screw‑clamp terminals for easy wiring. This Zelio Logic SR2 model is well suited to compact control panels, supporting applications such as lighting, pumps, conveyors, and other small automation sequences that require a ready‑to‑run smart relay.