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When power is off, NC contact of the relay will switch to NO contact for output, for the use of remote surveillance.

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Warranty Service will be honored if the damage is not caused by human, YLI Provides 1 years warranty for relative products. On the contrary, YLI will charge extra if repair. More information, please browse our service centre.

YLI Company retains right to modify the specification of products, and for parameters amendment of products, we will not inform in advance. The relative pictures are not allowed to used in any other way without the consent of YLI Company. Meanwhile, we reserved all the rights of law for any tangle

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