3Package Contents ..1. One (1) Transmitter Unit2. One (1) Receiver Unit3. Two (2) 12V DC 1Amp Power Adapter w/ Locking Power Connector4. One (1) User ManualFor any returns, please include all components listed above with original packaging in ResalableCondition. Absolutely No Returns will be accepted if any component is missing/damaged.Parts & Functions ..Tx – Camera Side HD-SDE-UTPTLeft Side View: Right Side View:Rx – DVR Side HD-SDE-UTPRLeft Side View: Right Side View:Application Diagram ..* The distance depends on the quality of the SDI signal from the HD camera source and also the CoaxCable & Connector** In order to achieve the Best Quality and Long Range cable run of up to 50m / 160ft for CAT5and 60m / 200ft for CAT6, you will need Good Quality Cable, Good Quality RJ45 Jack,and Good Quality Installation. All these 3 points are important because it affects thetransmission distance.x 2