The motor is equipped with a temperature protector. When the temperature is too high, the motor will automatically cut off the power supply to protect the motor. It has the characteristics of slow heating, stable start, high safety, waterproof, explosion-proof and so on. Motor delay protection: avoid long-term operation of the motor when the stroke fails. The default time is 90s, which can be adjusted by yourself. 100% pure copper motor is used, the gear is made of A3 steel finish electroplating and anti-rust material, the screws next to the gear are stainless steel screws, and the cover in the middle of the gear is made of stainless steel. When the power is off, you can turn the special clutch key, release the clutch, and push the door manually. Double-panel controller, using thyristors, reduces relay sparks and prevents relays from picking up., Manufacturer: DRAUXI