Before I purchase your product, I tested the remote control with more than 20 meters. I installed it in my place, but it is useless when I stand in floor 4.
Hello, FCL - 918 lock series, using microwave wireless communication technology of code (such as many car remote control), it can reach more than 20 meters in a straight line, but after through walls, signal will turn weak. FCL-918 with weak signal will fail to open the door. If you want to let distance farther, you can change a more powerful wireless remote control.Or please try the FCL - 918 electric lock straightly , so the effect will be much better.
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