# Wiring Diagram

<div data-full-width="false"><figure><img src="https://1731165174-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FtQJu2Q0LuwmDBRrVlRsJ%2Fuploads%2FFmdSXZN1nzntzVyWhn4L%2Fwiring-dg-800.png?alt=media&#x26;token=cf008d8f-2d50-4ea0-aefe-01ab2623c366" alt=""><figcaption></figcaption></figure></div>

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1. It is suggested to use a linear power supply unit to prevent reading range reduction at the card reader.
2. It is suggested to use #22\~26 AWG insulation wire.
3. Exit button is at N.O. contact.
4. With CE qualification EMC specification.
5. The door strike or relay must have a varistor or a diode across the door strike terminals to suppress the back EMF of the strike - failure to do so will damage the relay contacts and electronic components, or even burn the controller.
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Warranty :

The product is warranted against defects in material and workmanship while used in normal service for a period of 1 year from the date of sale to the original customer. The GEM policy is one of continual development and improvement; therefore GEM reserves the right to change specifications without notice.
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