Advantage 
 RRD-channel control allows for any hardware appliance doors, metal door glass, two-way door. Flexibility of installation is simple, easy to operate, requires no cylinder lock to open the export control device automatically open the double doors, the emergency channel for export. 
 Feature 
 Hard metal casing and bolt, flexible plug, stainless steel springs can immediately lift the latch, use 3 / 16 can be installed on any door on both sides, 1 / 4 the thickness of the panel, kit includes L-shaped wrench, screw driver , bolt film, door protection plate and a base template. 
 All channels can be used to control hardware devices, installed without mullions of double doors; steel latch and durable, solid; replace flat head bolt, installed in the double lock on the door of the non-active on-chip; can be installed on any type of security door .