Environmental Characteristics Operation temperature -20 °C to +70 °C / -4 °F to +158 °F Temperature cycling acceptance criteria Δα ≤ 0,15 dB, reversible Temperature cycling -20 °C +70 °C / -4 °F +158 °F Temperature cycling - reversible test method IEC 60794-1-22:F1 Temperature cycling test method IEC 60794-1-22:F1 Temperature cycling - reversible -25 °C […]