switch 221 are electrically connected to each other so as to establish two different power transmission paths the three way switch 210 is electrically connected to the power supply 102 for transmitting the electric power provided by the power supply 102 the single pole double throw switch 221 is electrically connected to the load 101 the power supply 102 the three way switch 210 the single pole double throw switch 221 and the load 101 are serially connected to form a series circuit the signal indicator module 230 sends a wireless signal the signal processing unit 222 is electrically connected to the single pole double throw switch 221 to receive the wireless signal the three way switch 210 further has a switching key 211 under the circumstance of manual control when the user presses down the switching key 211 the three way switch 210 is switched between the two power transmission paths so as to alter the conducting path of the electric power and thus making the three way switch 210 and the single pole double throw switch 221 be switched between two states of on off states under the circumstance of distal remote control the user uses the signal indicator module 230 to send.