CALL: A.WIHARTA 081294124885 085778084789 087784022201   Info Produk The Model TFX420/ 430 provides RTD accuracy in a robust, impact resistant, waterproof package. The lithium battery provides ultra long life ( Approximately 5 years) and is customer replaceable. It includes a large easy to read display with min./ max. and hold functions for temperature Measuring range -50° C to + 400° C/ -100° C to + 500° C Accuracy: TFX 420 ± 0.3° C TFX 430 ± 0.05° C Resolution 0.1° C ( 0.2° F) Operating Temp: -20° C to + 50° C Attributes: Dishwasher safe, robust, high accuracy, waterproof IP67 3 point factory calibration certificate