Features: LED light for night viewing Touch navigation buttons Mechanical keypad access Reliable proximity access (RF Cards/ Keyfobs) Efficient digital directory for guests to locate and call residents Visitors can also use the keypad shortcut to call apartments Status indicators for talk and door release Residents can also use the keypad to enter High-resolution camera with adjustable angle setting Compatible with 2-wire monitors and components Directly supports up to 32 apartments, and 256 with expansion modules Weather-resistant IP 44 protection Programming through keypad or software Flush Mounting Specification: 3.5-inch Color TFT Display Resolution: 320 x 240 pixels Power supply: DC24V Camera Lens: 1/4 ACS 4T image sensor with DSP processor Power consumption: Standby 33mA, Working status 157mA Video signal: CCIR/EIA Optional Wiring: 2 wires, non-polarity Full aluminum alloy panel Dimension: 13.78(H)×5.04(W)×1.81(D)inch