NETWORX NETPANEL ACCESS CONTROL PANEL TO BE USED WITH WIEGAND OUTPUT READERS ( 36-BIT). INCLDS 12V POWER SUPPLY, ONBOARD BIDIRECTIONAL RADIO, 4AH/12V RECHARGEABLE BACKUP BATT'Y & AC XFORMER FOR WIEGAND READER CONTROL, USING ENCRYPTED BIDIRECTIONAL COMMUNICATIONS. LOCKING METAL ENCLOSURE, W/ 12V POWER SUPPLY, AND PROVISION FOR RECHARGEABLE BACKUP BATTERY (SOLD SEPARATELY), PLUG-IN AC XFORMER. SCALABLE FOR MULTIDOOR CONTROL; UP TO 63 PANELS CAN BE NETWORKED TO COMMUNICATE TO AS FEW AS ONE GATEWAY.ALSO IDEAL FOR SECURITY GATE APPLICATIONS ETC