The C75/OILKIT is an effective and affordable way to measure combustion efficiency when installing or maintaining oil-burning appliances. This kit combines the innovative and feature packed C75 Combustion Analyzer and the SPT1 Smoke Test Kit. Equipped with smart and useful features like the digital multimeter style rotary selector, a real time clock and a magnet built-in to the boot. The C75 captures and calculates data with professional accuracy and ease. The SPT1 Smoke Test Kit determines efficient combustion from distillate fuels. This kit also includes a professional grade flue probe with a stainless steel shaft, an AC power adapter, an extra particle filter all packed in a compact and convenient soft carrying case. Three year limited warranty (Two year limited warranty on sensor).