The EM ID signal card /button shape are used together with ourguard tour hand-held readers. They are completely waterproof. And they can operate in wide temperature ranges. When sealed inside walls to prevent from damaging or theft, those signal cards can be read without contact.They are the ideal replacement products for contact-based guard tour checkpoints.
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Block 4 West, SEG Technology Park, Hua Qiang Road North, Shenzhen, China