The Elk UltraProx Wiegand Reader is a compact, technically advanced external proximity reader with 26 bit Wiegand output for use with a separate controller. Compatible with Elk M1 control panels and most other access controllers. Ideal for higher security installations and as an alternative to remembering PIN codes. Features:* Compatible with ELK M1 controllers (use ELK-W035A wiring harness)* Compatible with most access controllers* 26-bit Wiegand Output* Slimline waterproof housing with epoxy potted electronics* User configurable inputs for the onboard buzzer and green LED* Compatible with Clamshell Style (Credit Card size) Proximity Cards (ELK-M1PRC)* Compatible with Keychain Style Proximity Fobs (ELK-M1PRF)* Substitutes for User Code Pin EntrySpecifications:* Reader Format: 26 bit Wiegand* Operating Voltage: 12 VDC* Current Draw: 50 mA.* Size: 1.9 W x 3.2" H x .9" D