Feature: 1. Powerful Copper Motor: This electric sliding door opener features a powerful 750W AC copper motor with strong starting and pulling power. 2. Heavy Duty Design: This sliding door opener is designed for heavy duty use with high torsion, sliding doors, and a maximum weight capacity of 3,600 lbs. 3. 2 IR Photocell Beam Sensors: This sliding door opener has 2 infrared photocell beam sensors that prevent the door from closing, making it very safe to use. 4. Remote Control: This sliding door opener comes with 2 remotes that support opening or closing your door from up to 100 feet away. It can be set to close automatically (5s, 10s, 15s) to eliminate the worry of having to lock it when you enter your home. 5. Solid Galvanized Steel Racks: This sliding door opener includes eight 1.64 ft. racks (13.12 ft. total) and is made of 10 mm thick solid rust resistant galvanized steel to withstand any climate and other weather conditions. Specification: Item Type: Smart Sliding Door Opener Material: Stainless Steel, Red Copper, ABS Model: MD750 Working Current: 3A Power: 750W Motor Speed: 1400r/min Output Torsion: 36NM Running Speed: 12m/min ( Moving 12 Meters Per Minute ) Operating Environment: 110V -25℃-+55℃; 220V -25℃-+70℃ Maximum Applicable Door Weight: 3600LB Waterproof Grade: IP44 Remote Control Battery Information: 27A 12V Battery x 2 ( Shipped Without Battery ) Application: Suitable for patio doors, villa doors, sliding door type modification. Working Principle: The gear on the door opener drives the rack on the door body to make the door move horizontally, realizing electric opening and closing.. Package List: 1 x Smart Sliding Door Opener2 x Infrared Probe1 x Infrared Probe Manual14 x Screw6 x Screw Rubber Sleeve2 x Limiter2 x Limiter Bracket4 x Accessory2 x Key2 x Remote Control ( Without Battery)1 x Door Opener Instruction Manual1 x Mounting Base Plate4 x Expansion Screw8 x Racking Screw16 x Rack Screw Note: Read the manual carefully before use.