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JG-K501 Control Box : 1. Made by American Micro computer CPU , performance steady. 2. Learning code design , high security . Long remote distance . 3. Steady frequency , performance reliability ; Save energy ability , automatically break when the transmitter is not on work . 4. While meeting obstruction ,the door stops moving upward or rebounds while it is closing down. Can be adjust the strength . 5. With more light AC indicator on when the motor is working . 6. Auto close down setting timer function is optional to close down door after open up . 7.Connecting siren and infrared detector are optional . | ||||
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