Patent ID: 6445291
Filing Date: 2002-09-03
Classification: G08B

Abstract:
A method of controlling a security system with a bi-directional wireless key, comprising the steps ofactivating an input button on a wireless key; in response to activation of the input button, transmitting an RF control signal from the wireless key to a wireless adapter, the RF control signal comprising control data; the wireless adapter receiving the RF control signal and using the control data contained therein to retrieve a function data from a memory map, the function data previously programmed during an installation phase and emulating keypresses on a keypad that represent a function to be performed by the security system; the wireless adapter transferring a control word over a wired security system data bus, the control word comprising the function data retrieved from the memory map; a control unit interconnected to the security system data bus using the function data to perform a security system function; the control unit generating a response data word; the control unit transferring the response data word over the security system data bus to the wireless adapter; the wireless adapter utilizing the response data word to generate and transmit an RF response signal; and the wireless key receiving the RF response signal.