The temperature sensor measures the temperature of a cylinder and is compatible with many KOSO multifunction devices. The ring is simply screwed under the candle and can therefore be connected to the Koso instruments. To ensure that the spark plug remains in the correct position in the combustion chamber, the washer located under the spark plug must be removed in advance, if necessary. Specifications: Spark plug connection: 14 mm Temperature range: up to 250 ° C Delivery: 1 piece, incl. 4 spare rings