Rosslare Security AYCQ54B Convertible Anti-Vandal Backlit 3x4 PIN Reader / Controller - Multi-format Output (Wiegand 26-Bit, Clock & Data). 2 Bi-Color LED indicators, Internal Buzzer, LED Control. 3x4 Blue Backlit Keypad for PIN entry and programming. Fully Potted, meets IP65. Optical Back Tamper. Automatically converts into a 500 user controller when operates with Rosslare's Intelligent Secure power supplies
(PS-25TU Series, sold separately).