High-strength screw rotation, reinforced retainer and tailor-made 100% copper special powerful motor, the motor housing is made of one-piece aluminum die-casting, which is strong and . Manually release the key to open, and it can be easily opened even when the power is off. Suitable for bad weather, suitable for -20°C~+50°C. It can be used no matter rain or snow. The single-arm and double-arm modes are adjustable, which can realize the opening and closing function of a single door, and can also realize the opening and closing function of two doors at the same time. The soft start and soft stop functions effectively reduce the impact on the door body when starting or stopping, with lower noise and longer life. New metal telescopic arm with adjustable opening angle - the maximum opening angle is within 120 degrees. Strong carrying capacity - the maximum weight is within 350 kg (771.6 lbs) per piece, Manufacturer: DRAUXI