Rolling shutter door is a kind of door which is connected in series with multiple joints. In the fixed slide way, the rolling shaft above the door is used as the center to rotate up and down the door. Rolling shutter doors are usually widely used in shops.

      According to the acceptance part of the remote control of rolling shutter door, it can be divided into two ways: Super Heterodyne and super regeneration. Super regenerative demodulation circuit is also called super regenerative detection circuit, which is actually a regenerative detection circuit in intermittent vibration state.

      The rolling shutter door, like the wall, plays the role of horizontal separation. It is composed of curtain plate, seat plate, guide rail, support, reel, box, control box, door rolling machine, limiter, lintel, manual quick release switch device, button switch and safety device. It is generally installed in the position where wall separation is inconvenient.

      The carrier frequency commonly used in rolling shutter remote control equipment is 433MHz and 315MHz. The carrier frequency used by the remote control is an open frequency band according to the national regulations. Within this frequency band, the transmission power is less than 10MW and the masking scale is less than 100m. As long as it does not exceed the scale of the unit, it does not need to be approved by the "Radio Management Committee" and can be used freely.

      The upper end of the installation position of the rolling shutter door shall be provided with reliable fire prevention facilities. When the lower end of the roller of the rolling shutter door is used as the packing box or ceiling, a 500 × 500mm removable access hole shall be reserved at the lower end of one side of the electric rolling door machine for easy maintenance.

      For all electrically controlled rolling shutter doors, the operation direction of opening and closing is the same as that of the switch box, especially when the new power supply is connected for test run or the external input power is used to change the phase line, the manual device shall be used to place the curtain at 1 / 2 of the door opening height After the power supply is connected, try to open and close the rolling door until it is attached with the indication. Otherwise, the limiter will be damaged, causing the rolling shutter to roll backward or flush to the top.