SRD07 roller up door opener can be easy to convert your existed car space garage door to automatic one even if the length of side room is 400mm only.
It's also a best choice for your new garage because of it's featured with quiet, secure,and true DIY istallation.
SRD-04 is waterproff design,used in Australian style rolling door.Self learn reverse force set and LED courtesy light.The advanced switch power instead of transformer makes the power consumpution lower and the control board more reliable.It has multiple power input and thunder prof protection.The clear travel panel makes the travel set more convenient.