Normstahl Crawford Standard Steel EA433 2KM 2KS 4KS RCU N002800 Garage Door 433.92MHz Rolling Code Gate Remote ControlFeature:1) Compatible with: Crawford garage door opener.2) Number of channels: 4 / 23) Frequency: 433.92Mhz4) Battery:12V 27A / CR 20325) This is a third party remote control. NOT made by Crawford.Compatible Model:Normstahl / Crawford EA433 2KSNormstahl / Crawford EA433 4KSNormstahl / Crawford RCU433-2Normstahl / Crawford RCU433-4Normstahl / Crawford N002800Normstahl / Crawford EA433 2KM MicroNormstahl / Crawford T433-4Transmit distance - 25-50m in open space. Open space means no any interference. No walls, no doors, no trees or any other obstructions. Interference like garage door or brick wall can reduce remote control range significantly.Programming:The remote control functions the same as your original remote control1.Approach your motor so you are standing a few feet away from it.2.On the motor,press the programming button(1),Let it go.3.Prss a button on your new remote control for 1 second4.Wait 10 seconds5.Your new remote control is programmedInclude:1 x Remote Control1 x Battery1 x Keychain1 x English Manual,