Check the listing for details. Multi-Door Transmitter for PB3-REMOTE GAMA Electronics Overhead Door Control. Color: Black, Condition: New. Listed at 46.95 USD. This unique display transmitter is used in conjunction with the PB3-REMOTE overhead door control system and allows the user to control up to 99 doors on a single transmitter. Simply select the desired door number on the 2 digit display and your transmitter will control the corresponding door. PRODUCT INFOFrequency: 340MHzFunctions on (1) A-23 12V BatteryDimensions are approximately 4" x 2.25" x 0.75" .Transmit range is 100' with antenna mounted indoors and >500' with antenna mounted outdoors.Up to 99 doors can be operated on a single transmitterCan be programmed to open multiple doors on a single programUp to 12 transmitters can be used with each receiver. To purchase a complete PB3-REMOTE system Click Here GAMA Electronics PB3-DRC Features and Installation Video will open in a new window Using the eBay App? Paste link into a browser window: [isdntekvideo]