The California Heat TCOF 12V On/Off Switch is an essential accessory for your heated clothing, providing a reliable backup control option. With this switch, your heated gear will deliver full strength heat, reaching temperatures of up to +135?F. This device is perfect for those moments when your main temperature controller fails or if you need immediate warmth in a pinch. Designed for convenience, this switch allows you to easily toggle your heating system on and off as needed. Please note that while the California Heat TCOF On/Off Switch is a practical solution for temporary use, it is not recommended as a permanent heat control option due to its lack of adjustable temperature settings. Long-term use may lead to burns, so caution is advised. To operate this switch, you will need a 12V Battery Harness or a 12V Accessory Plug, sold separately. Always follow the manufacturer's instructions to ensure safe usage and optimal performance. Features: * Provides full heat control for heated clothing * Essential as a backup to main temperature controller * Designed for temporary use, not a permanent solution * Requires a 12V Battery Harness or 12V Accessory Plug for operation * Caution advised for long-term continuous use to prevent burns