A keypad security apparatus and security system are provided. The keypad includes a network connector to connect the keypad to a data network, an address tracker to track an address assigned to the keypad, and a data input to receive user input data, including arm/disarm commands and to transmit the data via the data network. The network may be a LAN, such an Ethernet connecting the keypad via a router to an internet. A security control panel may also be connected to the local area network. Audio data may be input to the keypad and transmitted via the network voice data over data network, such as voice over IP data (VoIP). The address assigned to the keypad may be an IP address or a local area network address. The keypad may be connected as a wireless device.