Specifications: dwt: Scimagic-RC Product Model: SMG-233V15.0 Product material: ABS Product size: 60*37*10mm Product weight: 40 g Rated voltage: 3V (CR2032 include) Installation: wireless Frequency: 433MHz, 433.92MHz. Code:Rolling code/Learning code/Fixed code Radio transmission distance: 30-100m (Open area) Scope of application: garage door, alarm, automatic door, rolling door, etc. Compatibility list Please make sure your remote is in the list. Easy to use This is a clone remote control, it needs to clone your original remote control face to face. If your remote control is a fixed code, after cloning, the new remote control will work. If your remote control is rolling code, after cloning, the new remote control needs to be programmed / activated on the receiver, the new remote control works. I will provide you with detailed instructions in the package, it is a card.