Pluggable lithium battery module BC291 for S7‑200 CPU22X series, battery voltage 3.0V, non‑rechargeable lithium battery, data retention time up to 200 days at 25℃, low‑voltage alarm threshold 2.2V, plug‑in memory slot, backup RTC clock & V‑memory data, operating temp 0℃~+60℃, storage temp‑40℃~+85℃, IP20, discontinued spare part, CE certified
