warm reminder:<br />1. please ensure suitability 433mhz carefully before purchase，thank you!<br />2. this key don't include battery，please install battery before ing.<br />3. if you have any problem，please contact  before refund or return. we have professional technical staff and ctomer service to solve the problem satisfactorily!<br /><br />specification:<br />quantity: 1 pc <br />size: approx. 6 x 3 x 2 cm lxwxh <br />operating frequency: 433.92mhz <br />distance: up to 100 meters <br /><br />features: <br />- lastest modern design &amp; technology equals a simply smarter &amp;unique remote <br />- button slide cover to protect buttons avoid accidental unplanned operation <br />- you can still keep &amp; e your original factory remotes as well as what a bno <br />- codes into your garage door in less than 30 seconds <br />- handy key chain size attaches to your car keys no more unwanted bulkiness <br />- 4 buttons to operate 4 different garage doors or gates <br /><br />duplicate your existing remote controllers: <br />1. vehicle central locking systems <br />2. electronic gates <br />3. garage doors <br />4. electrical appliances/home automation i.e. lights <br />5. car sunroofs <br />6. car/motorbike alarms <br /><br />how to program: <br />1. press the two top buttons until the led flashes - it takes around 3 seconds. <br />2. place the cloner remote and the original remote close together/side by side so that they are touching. <br />3. press a button on your original remote in the same time and one of the buttons on the clone remote and hold until the led on the clone remote flashes steadily. the blue led will first flash 3 times quick， then stops for a second， then flashes steadily for successful cloning. <br />4. now programming is successful! if you want to program more buttons jt repeat steps 2 &gt; 4. it's that easy! to reset the remote simply start again with step 1. <br /><br />package includes:<br />1/2/4 x gate garage door remote control key