Activation
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Open the sensor with a screwdriver
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Connect the red and black cable to power on
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Screw the cover back on
Installation
Reset
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Remove the screws from the bottom of the Dingtek unit
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Split the two halves apart
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Disconnect the red and black cables
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Wait 10 seconds
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Connect the red and black cable to power on (you’ll see a light on the circuit board when you connect the cables back together)
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Screw the cover back on