2000 Series E Style Access Control Keypad. Indoor/Outdoor Flush Mount Design. Single Gang. 500 Users. Features Illuminated Backlit Keys and Sounder. Two On-Board Output Relays Programmable. Door Monitor Input and Rex Input. Keypad Program. Stand Alone Mode Wiegand Output Mode and Iei Secured Series Output Mode Selectable. 10-30 VDC, 12-25Vac. 5 Year Warranty.