I have purchased 2 UHPPOTE access control systems and BOTH only work about 30% of the time. Both systems were professionally installed and I checked the cables to make sure everything was securely connected. The electromagnetic plates are aligned, touching and touching when the door is closed. When the magnet is activated, the 600-pound magnet keeps the door securely closed 30% of the time we need it, but the system randomly stops working and leaves the door open. This system does not provide the security we bought it for. I would not recommend buying this product.
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