Enclosure : NEMA 4X & IP67 (Waterproof and dustproof enclosure intended for outdoor use). Aluminum alloy, polyester powder coated. Corrosion protection C3 according to ISO 12944-6. Motor : Standard: Insulation class F Built-in thermal protection prevents motor burning out. AC motor:125±5℃/257±9℉ DC motor:90±5℃/194±9℉ Duty Cycle : OM-A:30% duty cycle (Standard Model) OM-A:75% duty cycle (Optional) Working Conditions : Ambient temperature:-30℃ to +65℃ / -22℉ to +149℉ The humidity:30% to 95% Position Indicator : All models have continuous mechanism position indicator on the top of actuator cover. Gear Train : Gear trains have been already lubricated sufficiently with anti-high temperature lubricant at the factory. Conduit entrance : Standard: 1/2" PS Optional: 1/2"PF, 1/2”NPT or M20 Various voltage : DC 12V AC/DC 24V AC 110/220V,1-Phase Enclosure : Nylon coating E.D. coating Epoxy coating