Use your current wireless switch to add a new wireless timer switch. Also, if you are using the 3-point remote control, you can increase the operation method of timer switch depending on your application. By setting the timer, you can open and close the shutter at the set time even if you are not in use. Additional remote control is a method to register a new remote using your current remote. Cannot register directly from a new remote. If there is no one current remote available, please contact us if you cannot register for additional information. Only customers who currently use the wireless switch or the Celecard III remote control can be added. If you cannot register after purchase, we will register with our company, but it will cost $15,400 business trip construction costs (including tax).