Operating temperature: -20 degrees to 70 degrees, advanced models of green gold capacitors temperature 105 degrees 10,000 hours, 70 degrees greater than 5 years, room temperature about 20-50 years (not recommended for use above 70 degrees), output filtering high-quality solid-state capacitors Input characteristics: Input voltage range: AC50V-277V DC70V-390V No-load power: Output characteristics: multiple modules of the same voltage can be used in parallel to meet the needs of small space and high current. Output voltage: 12V -0.05+0.3V no-load and full-load, light load minus 0.1V, back up at heavy load, ripple 100mV at 50% load Output current: 12V0mA-300mA, full load into the constant current mode of operation Test resistance: 12V with 40 ohms (12V) Output indicator: green light Output power: 3.5W Efficiency of about 80 per cent Output protection: over-voltage, over-current, over-temperature, over-power, short circuit protection, etc. Translated with DeepL.com (free version)