YD-604 is a wall mount door holder .the Maximum tension achieves 50kg(110Lbs),with the feature of environmental friendly low power consumption.It will release automatically the fire door in case of fire.It also contains build-out release button for testing and build-in MOV which reverse current protection.
12/24 VDC+/- 10% (Adjustable)
All Kind of Single & Double Smokeproof Doors
0~90% (relative humidity)
Finishes for Shell
High Temperature Paint and Environmental Protection Zinc