Question: Brandon wrote to us inquiring about the following… I am considering purchasing an Apollo electric gate opener. Can you explain to me the difference between the 1500 and the 1550ETL? Answer: Well Brandon, the Apollo 1500 is a solar compatible swing gate operator for gates of up to 16 ft. and 600 lbs. and includes a built in receiver, with 4 types of inputs (open, safety, shadow and fire), adjustable auto reverse sensitivity, timer to close and available 3 button manual station for commercial applications. This 12VDC gate opener is suitable for commercial and moderate duty applications and comes with a manufacturers two year factory warranty. The Apollo 1550ETL is also a solar compatible swing gate operator for swing gates up to 16 ft. and 600 lbs. but here the advanced circuit board offers you the soft start/stop feature and UL325 Compliance with a sturdier corrosion resistant housing and a full manufacturers two year warranty. So keep those question rolling in and I will try to keep you informed of all the latest, greatest technology. Have 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.