This is the latest SCP Controller from Slot.it and the most versatile electronic Slot Car Controller ever made. Slot.it SCP controllers are our favorites because: Smooth, maintenance-free action, advanced features and wide adjustment make this the one controller for all car and track types. Packed with features! Anti spin control, Minimum Speed Control, Adjustable braking, Max speed limiter, Thumb brake button and more! This controller can handle a whopping 20 amp continuous draw and 40 amp peak to manage the most fierce slot car motors, yet adjusts for subtle control of the mildest ones! A three position switch easily changes between Slow - Standard - Fast power curves. The Slot.it SCP-2 is contactless, friction free, with a frictionless 128 step trigger. Its light touch makes for superior control and comfort, especially with old fingers in long races. Two trigger profiles are included. By eliminating physical electrical contacts, no controller maintenance is required and durability increased. SCP controllers also feature an interchangeable cartridge system, to connect to either analog or digital systems. This SCP-3 can communicate wirelessly directly to to Slot.it oXegen, Scalextric SSD or via a CRI receiver and an appropriate cartridge, to Analog or Carrera digital. This SCP-3 as delivered works as a wireless controller in either OXIGEN or SSD (Scalextric Sport Digital modes. You will need LiPO USB rechargeable battery SCP301b available separately To use as an Analog Controller for home sets with low amperage cars (Scalextric, Carrera, Slot.it, NSR, Policar, ThunderSlot, 1/32 ScaleAuto, BRM Revoslot and similar): Use Home Series Universal Module, SCP201BC which can work on either home set wiring or commercial/club wiring, but not for high powered commercial type motors. No battery needed with this corded cartridge. To use as analog controller for all slot cars including those with more powerful motors: Use the The "Metal" High Amperage Cartridge SCP201g. Hi Amp Module , rated up to 20 amps continual draw, but not suitable for home track wiring.* No battery needed with this corded cartridge. To use either Analog cartridge wirelessly: add LiPo USB rechargeable battery SCP301b and "CRI" Radio Receiver SCP201L To Use as a Carrera Digital Controller: Use the SCP201e Universal Digital Cartridge. No battery needed with this corded cartridge. For Carrera Digital Wireless: add LiPO USB rechargeable battery SCP301b and "CRI" Radio Receiver SCP201L We usually have all of the above options in stock on our store, or can order them by request. You will need to activate this controller on line, and update the software, which is explained in the printed and online manual. Full details and downloads are available at: https://slot.it/scp-controllers/ *Commercial/club wired track use the Red Wire as Brake and Ground negative - to your Power Supply. The White Wire is the Positive + feed. Black is to the trigger. Home Series ( most Home Sets ) run the opposite wiring where the Red Wire is + and the white is negative. The Universal Home Series Module can run either wiring types. Never use the Hi Amp module wired this way as this can potentially damage your Controller and the module. WIth and SCP controller set for wireless digital everything except brake strength is adjustable via the controller knobs.