A remote control system having a communication frequency lower than wireless local area network signals, the remote control system comprising: a control interface; a wireless local area network router linked to the control interface and configured to bi-directionally communicate with the control interface via wireless local area network signals; a bridge linked to the wireless local area network router and configured to down-convert wireless local area network signals outputted from the wireless local area network router to low frequency signals that are lower in frequency than the wireless local area network signals and up-convert the low frequency signals to the wireless local area network signals; and a first low frequency control module linked to the bridge and configured to bi-directionally communicate with the bridge via the low frequency signals; wherein the bridge and the first low frequency control module are disposed in the same housing; wherein the remote control system further comprises at least one of a switch wirelessly linked to the first low frequency control module for bi-directionally communicating using the low frequency signals from the first frequency control module to control a device by the switch according to control instructions received by the switch and a sensor linked to the first low frequency control module and configured to generate a sensing signal according to environmental conditions and transmit the sensing signal to the first low frequency control module for controlling the remote control system according to the sensing signal; wherein the low frequency signals are approximately 433MHz; wherein the remote control system further comprises a door lock system linked to the wireless local area network router and configured to transmit image signals to the wireless local area network router; wherein the first low frequency control module further includes an infrared emitter and is adapted to convert the low frequency signal to infrared signals and to transmit the infrared signals to an infrared remote controller via the infrared emitter. a control interface; a wireless local area network router linked to the control interface and configured to bi-directionally communicate with the control interface via wireless local area network signals; a bridge linked to the wireless local area network router and configured to down-convert wireless local area network signals outputted from the wireless local area network router to low frequency signals that are lower in frequency than the wireless local area network signals and up-convert the low frequency signals to the wireless local area network signals; and a first low frequency control module linked to the bridge and configured to bi-directionally communicate with the bridge via the low frequency signals; wherein the bridge and the first low frequency control module are disposed in the same housing; wherein the remote control system further comprises at least one of a switch wirelessly linked to the first low frequency control module for bi-directionally communicating using the low frequency signals from the first frequency control module to control a device by the switch according to control instructions received by the switch and a sensor linked to the first low frequency control module and configured to generate a sensing signal according to environmental conditions and transmit the sensing signal to the first low frequency control module for controlling the remote control system according to the sensing signal; wherein the low frequency signals are approximately 433MHz; wherein the remote control system further comprises a door lock system linked to the wireless local area network router and configured to transmit image signals to the wireless local area network router; wherein the first low frequency control module further includes an infrared emitter and is adapted to convert the low frequency signal to infrared signals and to transmit the infrared signals to an infrared remote controller via the infrared emitter.