发布人：http://www.kdjlm.com 发布时间：2018-12-04 14:18:16
The carrier frequencies commonly used in the configuration of rolling shutter remote controllers are 433 mHz and 315 mHz. The carrier frequencies used by the remote controllers are the open frequency bands stipulated by the state. In this frequency band, the transmitting power is less than 10 mW and the coverage is less than 100 m. As long as the power does not exceed the scope of the unit, it is free to go through the approval of the Radio Management Committee. Use.
Ji'nan rolling shutter door
The regenerative detection circuit in the state. The superheterodyne demodulation circuit is similar to the superheterodyne radio. It sets up a local oscillation circuit to generate oscillation signal. After mixing with the received carrier frequency signal, the obtained intermediate frequency signal is amplified and detected by the intermediate frequency, and then demodulated the data signal. These two methods are often adopted in the configuration of the remote controller for rolling shutter doors.
1. The good or bad lubrication degree of the rolling shutter door can make the opening of the rolling shutter door more smoothly, so the heat dissipation degree of the electric rolling shutter door with good quality is better.
2. Electric curtain door not only uses electric machinery, but also supports manual function. Convenient and fast manual opening and closing of the curtain door can twist the clutch 90 degrees when the curtain door is out of power, so it can be pushed by hand.
3. In order not to make the curtain door slide inertially, the small function of double-sided automatic lock will be used on the curtain door body.
4. The curtain door with full gear rotation has no interference from chain and belt, which can greatly enhance the service life of the curtain door core.
Rolling door manufacturers
The open frequency band is 315 mHz, while the European and American countries stipulate 433 mHz. Manufacturers will adjust their production according to different regulations of different countries. Therefore, the frequency of remote control for products exported to different countries is different.
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