For the keyfob, we provide all kinds of color for choosing, if need special color, please leave message in the order, we will obey to send, if not leaving any message, we will send random color. Thanks. Specification: Work Voltage:Dc 12V Open Lock Current:0.1A User Capacity: 1000 users / 4000 users Inductive Distance:5~15mm Card type:EM/ID/IC Frequency:125KHz / 13.56mhz Size:120*78*22mm Weight:0.22kg Function: With master cards function Supporting card,password,card+password to open door Offline work Power off data protection function Connect to the door bell by wire or wireless with accordance to customer requirement and support the switch for opening the door Package includes: RFID Proximity Door Control Unit*1 English User manual*1 1pack screw 10 RFID keytab