Upgraded dual functions: restart version function + automatic patrol function Upgraded Version Chameleon Ultra,with restart function, you can double-press two buttons to restart in case of battery failure. function of automatic patrol, if the customer writes the access control into the device, the device can automatically recognize and open the door. Our small and versatile device can clone and emulate a wide range of RFID tags and cards. With This Device, you can create copies of RFID tags and cards, which can be used to access secure areas or equipment that require RFID authentication. You can also emulate and stores different types(125KHZ/13.56MHZ) of RFID cards This Device is a valuable tool for anyone working with RFID technology, whether you're an engineer, security professional, or just a curious hobbyist. And thanks to its compact and portable design, you can take it with you wherever you go! Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Color: Black & Transparent Material: plastic Package Contents: 2 x RFID Reader 2 x CUID Keychain(Random color and appearance, No designation accepted.) 4 x Adapter(Random color and appearance, No designation accepted.) 2 x USB Cable (random colors, don't accept the specified color) 2 x Lanyard