Place of Origin
Guangdong, China
Material
Stainless Steel+ABS
Power Supply
4 AA batteries (not included)
Unlocking method
remote controllers/indoor touch
Scope of use
suit for all kinds of door, no limited of door thickness.
Feature
automatically close function( can close this function)
Remote Key Battery
Button Lithium Battery(not included)
Remote Controller
4pcs standard
MAX. Remote Controllers Number
20pcs(not included)