1. to open, stop and close the door by only one button 2.with the door ... infrared radial & optional safety margin; 3. Single button to open and close: with the door position in arbitrary control; 4.Power: AC220V ... ; Motor: AC24V 300W; Electric heat tape: 36V, 15W/M; Open and close time: 5-8 seconds (with adjustable gaps) ZDLM-2 Hinge ...