The following is an AI-generated explanation: "TE57" is a model number for a car-specific harness primarily used with engine starters made by Car Mate. It is not the main unit itself, but rather a part needed when installing an engine starter in specific car models (such as Honda vehicles). The TE57 alone does not provide engine starter functionality; it must be combined with a compatible main unit (e.g., TE212) to enable remote engine starting, preheating (in winter), and pre-cooling (in summer), allowing for comfortable departures from cold winter mornings or hot summer cars. Key points of TE57: * Role: A "car-specific harness" to connect the engine starter main unit to the car. * Compatibility: Used in conjunction with Car Mate engine starters. * Suitability: Requires a different harness for each car model, such as the TE57 for Honda vehicles. * Function: When combined with the main unit, enables engine starter functions (remote start, preheating, etc.). Points to note: * Main unit required: The TE57 is a harness, so a separate engine starter main unit (remote control) is needed. * Installation: Choose the correct harness for your car model, and professional installation is recommended. * Safety features: Some models require a procedure to stop and restart the engine after starting to prevent immediate driving. Please understand that this is a used item before purchasing. Everything in the photos is included.