Self Copy. This is a clone remote control, it must clone from the remote control. If your remote control is not working, then this product would not suitable . 433.92MHz can accurately respond to your commands without any delay. Fixed Code - ensures a of security. Your garage door can only be controlled by this specific remote. Battery: Included - you don't need to buy any extra battery for this remote. Buttons: gives you the ability to control up to two different garage doors. Working voltage: DC6V (2016 button battery) Working current: ≤12MA Working frequency: 433MHZ Transmitting power: ≥10MW Launch distance: 50-100 meters (open space) Frequency deviation:±0.2MHZ Transmission rate: 50--60KHZ Working temperature: -20°C~70°C Storage temperature: -10°C~50C Humidity: below 85% size: 6.5 x 3.5 x 1 cm Material: plastic colour: black Package Contents: 1 x Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.