Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

"The max working current: emitter: <=10mA; Receiver: <=30mASignal output electric status: 8Vp-pSignal transmission format: multi-frequency impulseDistance of signal transmission:>=3kmAppearance dimension: 175*42*27mm(receiver); 126*49*34 (emitter)Color: OrangePackage Included:Cable Transmitter x 1Cable Receiver/Tracker x 1RJ45 Cable x 1RJ11 Cable x 1Cable with crocodile clamp x 1Earphone x 1Instruction manual x 1Bag X 1"