Rosslare Security AYJ20B Mini-Mullion Multi-Format Proximity Reader - Selectable Wiegand 26 bits / Clock & Data / RS-232 125KHz RFID Card / Tag Reader.
Read range of up to 10cm (3.9"). 10-Wire interface. Bi-Color LED with control, Buzzer control, Reader Hold control. Optical back tamper.
Size: 120mm x 42mm (4.7" x 1.6"). Waterproof, Fully Potted, IP65 rated.