In addition to our line of Electronic RFID locks are the accessories you may require to complete your installation. Included are: Emergency Power Backup. In the event the batteries in your lock fail you can use this device to temporarily to open your lock to replace the batteries. Lock Extension Kits for installing locks on wood or laminate doors that are 1/2" or 3/4" thickness. Also available are assorted RFID Access Cards and Wrist-type RFID User Access. Coming soon will be an RFID card reader for more advanced functions and programming.