obscuration level smoke test

• ULC S529 smoke detector test - NFPA 72 EN 54 Compliant Smoke··· ULC S529 smoke detecto··· 2026-06-09
• software update via USB: Wanlin China Export to Global Fire ··· software update via US··· 2026-06-09
• calibration due date display Export Solutions - Wanlin China··· calibration due date d··· 2026-06-09