Color: Black + white - Model: AJ681 - 2.4" LCD display screen - Resolution: 122 x 32 dots - Data preservation: 10 years after power off - Off-line capacity: 25000 - Control card: 2046 - Card type: EM - Working voltage: DC12V - Power consumption: 3W - Sensing distance: 6-15cm - Reading speed: 0.15sec - Communicating mode: RS485 - Networking capacity: 255 - One built-in card reader - 2 groups of self-adaptive WG wigan interface (automatic identification of W26/W34/W42/W44 signal) - 2 groups of door magnetic input - 2 groups of door open button input - 2 groups of relay output - 1 group doorbell interface - 1 group RS485 interface - Chinese & English Menu with backlit - Package includes: - 1 x CD - 1 x Chinese user manual - 1 x Connection cable (20cm)