Ambient temperature: -25 ℃ ~ + 55 ℃ Air relative humidity: ≤ 98% In the vibration frequency of 2-80Hz acceleration of 0.7g under normal work Power frequency withstand voltage: 2.5KV (AC RMS), 1min Insulation resistance: ≥2MΩ AC indicator allows voltage fluctuation: ± 20% Continuous Life: ≥ 30000H Brightness: ≥ 100cd / m2 Comparative tracking index CTI: ≥ 100 Head protection: IP65 Frequency of use: AC50 ~ 60Hz Power:Optional Colour:Optional Quantity: Optional