Linear D-22A 1-Channel 1-Button Handheld Transmitter<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Test/operate pushbutton &amp; led </span></li><li><span class="a-list-item"> Current consumption: 12 ma transmitting </span></li><li><span class="a-list-item"> Standard digital format: 256 selectable codes </span></li><li><span class="a-list-item"> Powered by one 9-volt battery (supplied) </span></li><li><span class="a-list-item"> Rf frequency: 303.875 mhz </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41vDlxNEzuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41vDlxNEzuL.jpg" noproxy>