The Transmitter Solutions Firefly 433TSD21K garage door or gate opener remote control from Garage Door Supply Company is a compact 433MHz keychain remote that will allow you to open and close your garage door or gate without having to use a key. This clip-on keychain Firefly remote is compatible with 433MHz Transmitter Solutions garage door/gate opener receivers with 10 dip switches. A 12-volt battery is included.
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