The 433MHz remote control one should behave better in narrow environments, so if your application stays inside then it's better to have that module...
On the other hand, the 315MHz remote control has a longer wavelength and you will get a little bit more range outdoors in an open environment...
Chinese open frequency band is 315Mhz, Customer in Europe will no doubt choose 433Mhz since is it required in EU / CE R&TTE regulations, while in the USA, the customer usually can choose from 260 to 470Mhz freely, as they're all approved frequencies in FCC ID regulation, but due to the cost and other concerns, there are simply two options that chosen most by customers, that is 315Mhz or 433Mhz.
So 315Mhz is not allowed in Europe, while both 315Mhz and 433Mhz can be allowed in the USA, so to be more international, we would recommend our customers choose 433Mhz because it is simply a worldwide frequency that can be used everywhere.
Radio remote controller commonly used encoding methods are three types,
namely fixed code, learning code, and rolling code. Learning codes and rolling codes are upgraded products of fixed codes. The rolling code remote control is currently the most secure. At present, all occasions with high confidentiality requirements use rolling coding.
If for doors open, Learning codes will be much better, you could program and add any transmits as you want, available models are as below:
Author:Written by Ms.Anna Zhang from S4A INDUSTRIAL CO.,LIMITED
Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.