Extech 445715 Big Digit Remote-Probe Hygro-Thermometer

The Extech 461891 High‑Precision Contact Tachometer delivers accurate RPM and surface speed readings with exceptional detail. From as low as 0.5 RPM up to 19,999 RPM, and speeds from 0.2 ft/min to 6560 ft/min, it offers unparalleled flexibility for maintenance, diagnostics, and performance monitoring.

• Large Dual Display - Instant Readings: Simultaneously shows humidity (10-99 % RH) and temperature (−10 to 60 °C / 14 to 140 °F) on oversized digits for quick, effortless monitoring.
• Reliable Accuracy with Fast Response: Accurate to ±4 % RH (25-85 %) and ±1 °C / ±1.8 °F, ensuring dependable environmental readings in diverse conditions.
• Convenient Remote Probe & Mounting Options: The 18″ (45.7 cm) extendable probe allows flexible placement in ducts or remote locations; device clips can mount it on walls or sit it on a desk using the built-in stand.
• Track Extremes with Max/Min Memory & Reset: Capture and review recorded high and low values with max/min function; easily reset the readings when needed to start fresh monitoring cycles.
• Calibration-Ready & Ready-to-Use Package: Features rear calibration adjustment pots for RH and temperature; includes mounting bracket, built-in stand, sensor, and one AAA battery—plus optional NIST-traceable certification for compliance.