• This Advanced 500 User Self Contained PIN Controller has (2x) 5A Output Relays, and 2 Inputs, with 3 Security Modes and 3 User Levels, and Easy User Enrollment and Operation. The Housing is Weather Resistant Featuring Large ILLUMINATED KEYS. Ideal for Applications with Frequent Night Time Traffic & Dark Difficult Visibility, In Residential, Commercial, and Indoor Industrial Applications. • 2 Bi-Color LED Menu / Fully Potted / Rated IP65 / Optical Back Tamper / Works on 12-24 VAC or 16-24 VDC • 10-wire Interface (10 Colors / Label on Back of Unit).