A method for automatically disarming an intrusion detection system protecting a premises , comprising: receiving an indication of detection of an intrusion to said premises ; responsive to receiving said indication, ascertaining whether said intrusion detection system is in an armed state of operation; responsive to ascertaining that said intrusion detection system is in said armed state of operation, ascertaining whether at least one registered mobile communicator , that is registered with the intrusion detection system , is in a vicinity of said premises ; responsive to ascertaining that said at least one registered mobile communicator is in said vicinity of said premises : establishing a BLE connection with said at least one registered mobile communicator ; communicating, to said at least one registered mobile communicator , over said BLE connection, an indication that said intrusion detection system is in said armed state of operation; receiving, from said at least one registered mobile communicator responsive to said indication that said intrusion detection system is in said armed state of operation, over said BLE connection, an instruction to disarm said intrusion detection system ; and responsive to receiving, from said at least one registered mobile communicator , said instruction to disarm said intrusion detection system , forwarding, to said intrusion detection system , over a powerG protocol, said instruction to disarm said intrusion detection system , thereby automatically disarming said intrusion detection system . receiving an indication of detection of an intrusion to said premises ; responsive to receiving said indication, ascertaining whether said intrusion detection system is in an armed state of operation; responsive to ascertaining that said intrusion detection system is in said armed state of operation, ascertaining whether at least one registered mobile communicator , that is registered with the intrusion detection system , is in a vicinity of said premises ; responsive to ascertaining that said at least one registered mobile communicator is in said vicinity of said premises : establishing a BLE connection with said at least one registered mobile communicator ; communicating, to said at least one registered mobile communicator , over said BLE connection, an indication that said intrusion detection system is in said armed state of operation; receiving, from said at least one registered mobile communicator responsive to said indication that said intrusion detection system is in said armed state of operation, over said BLE connection, an instruction to disarm said intrusion detection system ; and responsive to receiving, from said at least one registered mobile communicator , said instruction to disarm said intrusion detection system , forwarding, to said intrusion detection system , over a powerG protocol, said instruction to disarm said intrusion detection system , thereby automatically disarming said intrusion detection system . establishing a BLE connection with said at least one registered mobile communicator ; communicating, to said at least one registered mobile communicator , over said BLE connection, an indication that said intrusion detection system is in said armed state of operation; receiving, from said at least one registered mobile communicator responsive to said indication that said intrusion detection system is in said armed state of operation, over said BLE connection, an instruction to disarm said intrusion detection system ; and responsive to receiving, from said at least one registered mobile communicator , said instruction to disarm said intrusion detection system , forwarding, to said intrusion detection system , over a powerG protocol, said instruction to disarm said intrusion detection system , thereby automatically disarming said intrusion detection system . <EOS>