Keypad Module – Keypad module, module connection with RS-485 ,IP65,Backlight compensation,Flush mounting, Surface mounting,Unlock door via inputing password, powered by other module (Power input: 12VDC, Power output: 12VDC) 98.21 mm × 100.21 mm × 33.7 mm (3.87″ × 3.95″ × 1.33″)