Patent ID: 8026811
Filing Date: 2011-09-27
Classification: G08B

Abstract:
1. A security system comprising: a system control panel for arming and disarming a security system; a door sensing unit mounted proximate to a door to be monitored, the door sensing unit comprising: a disarm device comprising an LF detection circuit configured to detect the LF data packet, the disarm device configured to discard the LF data packet when a frequency of the LF data packet is outside a predetermined range of frequencies to conserve power in the disarm device and activate an RF transmitter within the disarm device to transmit an RF disarm data packet based on the LF data packet when the frequency of the LF data packet is within the predetermined range of frequencies, the RF transceiver configured to transmit a disarm message to the system control panel over the network to disarm the security system based on the RF disarm data packet.