Mike from South Carolina asked. Question: I have an Apollo 1550ETL gate opener and the remote keypad they had on it was a linear ak-11. I was wondering is there a list of different type and brand wired keypads I can use with this gate system. Answer: Mike what you have is a hardwired keypad and any hardwired keypad will work seamlessly on your system, however if you want to go wireless may I recommend the Apollo 951N – for approx. $186.00. Do you have any questions regarding our products? Our technical sales and support team is standing by if needed, just give us a call at 1-800-730-8382 or contact us by e-mail as we are eager to assist you for all your access control equipment needs. Find the access control product you're looking for today!