Contactless smart card. Finished Square reader (the same size as a standard luminary switch) Also interoperable with a growing range of 13,56Mhz (iCLASS™, SEOS™, iCLASS™ SE, iCLASS™, MIFARE®, MIFARE® DESFire® EV1 standardand NFC+BLE, with custom data models) technologies. Includes HID®/EM/AWID 125 KHz proximity. Wiegand and OSDP output protocol.