Features 1、Door suction is a supporting products of fire door system, which is a fire door control device. 2、With a manual release button, easy to operate, convenient for using. 3、Suction of about 500N, strong stability, release without residual magnetic while power failure. 4、Normally keep the fire door open by power supply; release the fire door by controlled power failure during fire; the fire door will be closed under the action of the door closing device. 5、Pure electromagnetic principle, simple structure, firm and durable, not easy to be damaged. 6、Floor mount, easy to install, no need complicated tools, save time and effort. Specification Condition: Brand New Item Type: Fire Door Holder Material: Zinc Alloy Color: As picture shown Suction Force: ≥500N Working Current: 160mA/80mA Surface Treatment: Electroplating Suitable For: All Kinds of Single/Double Door Fire Doors Installation: Floor Installation Working Mode: Normally keep the fire door open by power supply; release the fire door by controlled power failure during fire; the fire door will be closed under the action of the door closing device Package List 1 x Door Suction 1 x Accessory 1 x Screw Pack