The rf cards contain a mifare iso14443a chip operating at 13 56 mhz. I just installed a samsung shs 7020 ezon lock purchased from amazon. Samsung digital door lock brochures manuals samsungddladmin 2019 12 11t13 18 28 08 00.
Samsung Shs 7020 Keypad Door Lock New By Samsung 454 99 High Performance Durable Touch Keypad Digital D Digital Door Lock Keypad Door Locks Home Hardware