... Adopts direct current electrical engineering device, for steadier operation, low door opener: 220volts/110volts, 800Nm,1000Nm,1200Nm.Features:1) Adopts ... momentum2) Fully electronic, easy and simple to set up3) Door opening is controlled by motherboard4) Memory function remembers last position ... to open or close the doorPacking: carton sectional garage door opener, door motor,industry door opener