... 4. LED Display Product Introduction MAR3 is metal RFID Wiegand reader with NO keypad. It's vandal-proof, wiegand out, ... panle or host machine which support Wiegand in as client reader. Technical Specification · Metal shell, anti-vandal· shockproof and ... · Reading range: 5 cm · Wiegand output · Work as Wiegand reader· LED Display · Transmission Distance: 100M· Application: luxurious office building, ...