KEYBOARD WITH RFID READER GB-100C. It can hold up to 500 users (RFID chip, card) in its memory. The relay allows the connection of a door lock or other controlled device. A simple internal keyboard with an RFID reader is designed, for example, for opening doors. It also includes an integrated doorbell button that you can attach to the doorbell. Specifications: Supply voltage: 12V DC User capacity: 500 Output: Relay (12V / 2A) M: 125kHz EM4001 Operating temperature: 0 ° C to 45 ° C Dimensions: 110x110x22mm Package Include: 1 X KEYBOARD WITH RFID READER GB-100C