Display module, module connection with RS-485 , IP65,needs mouting bracket, Backlight,Flush mounting, Surface mounting, 98.21mmx100.21 mm x33.7mm, 3.5 inch LCD, 320*480, 4 buttons, dial number display, pin code unlock, contact list display, powered by other module (Power input: 12VDC, Power output: 12VDC)