1.What is material this product made of?
--------It is die-cast aluminum housing ,gear is copper ,the motor wires is copper.
2.Can it be used outside?
-------- Yes, our dual swing gate opener could be used inside and outside of gate.
3.What is the frequncy of your remote control?
-------- It is 433Hz.
4.What is the longest time for opening and closing the gates?
-------- It is about 12s. It could be set up depending on your demand.
5.What's you warranty?
-------- 1 year time warranty, little charge after one year, and all the life time technology freely.