The opener only can work properly after mounted. Because it needs to find a closing position first. The motor just keep rotating slowly if opener not installed on the door. There two kinds of door opener work with different input voltage AC110V and AC220V,correct item will be sent as per your installation place. One complete set includes: Operator, 2 arms, 2 remotes,2pcs push buttons,1 hand programmer,1 English manual. Technical specification: Model: DSW85 Swing application: one-way open, single leaf and double leaf standard doors Swing application: one-way open, single leaf and double leaf standard doors Power supply:110V+/-10%, 50/60Hz Motor:DC 24V brushless motor,spring closing and resetting Max power consumption: 100W Door weight: 300kg/660lbs Opening Angle: 80 to100 degree Opening/closing speed: 3~7s (adjustable) Hold-open time: 0.5~30s (adjustable) Environment temperature: -20~45℃ Opener size: 24''(L)*5''(W)*3.46''(H) Opener weight: 33 LBS Unique operating features: it is spring closing or you can manually open and close door whether it is power off or power failure.
