# Extech RHT50 Humidity/Temperature/Pressure Datalogger # Extech RHT50 Humidity/Temperature/Pressure Datalogger ## Key Features At A Glance - USB interface for instrument set-up and data download to a computer - Records relative humidity, temperature, and atmospheric pressure in one unit - Datalogs up to 10,000 readings with a user-programmable sample rate - Selectable sampling rate from 1 minute to 18 hours - Selectable atmospheric pressure units: psi, hPa, kPa, and bar - User-programmable Min/Max alarm thresholds - Manual and programmable start modes with Red/Yellow and Green LED status indication - Complete with 3.6V lithium battery, mounting bracket, and Windows analysis software The Extech RHT50 is a compact datalogger that records relative humidity, temperature, and atmospheric pressure in a single unit. It captures up to 10,000 readings using a user-programmable sample rate, and its USB connector plugs directly into a computer so the logged data can be downloaded and analyzed. The RHT50 monitors humidity, temperature, and air pressure levels in clean rooms, warehouses, storage rooms, freezers, shipping vans, and water damage restoration environments. These are the settings where tracking ambient conditions over time directly supports product, inventory, and process integrity. ValueTronics stocks and holds its own inventory in a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. ## Brand Heritage Extech Instruments was acquired by FLIR Systems in 2007, which itself became part of Teledyne Technologies in 2021. The Extech brand has continued under those owners for its line of portable test and environmental measurement instruments. ## Accessories Supplied - 3.6V Lithium battery - Mounting bracket - Windows® 98, 2000, XP, and Vista compatible analysis software ## Product Core & Specifications Specification Value Temperature Range \-40 to 158°F / -40 to 70°C Resolution 0.1°F/°C Accuracy (14 to 104°F) ±1.8°F Accuracy (-40 to +14 and 104 to 158°F) ±3.6°F Accuracy (-10 to 40°C) ±1.0°C Accuracy (-40 to -10 and +40 to 70°C) ±2.0°C Humidity Range 0 to 100%RH Resolution 0.1%RH Accuracy ±3.5%RH Air Pressure Range 13.7 to 15.2psi Resolution 0.1psi Range 950 to 1050hPa Resolution 0.1hPa Range 95 to 105kPa Resolution 0.1kPa Range 0.9 to 1.0bar Resolution 0.1bar General Datalogging interval 1 minute to 18 hours Memory 10,000 points Dimensions 5.1 x 1.1 x 0.98" (130 x 30 x 25mm) Weight 1oz (20g) > Recommended pairing: keep replacement 3.6V lithium batteries on hand using ordering code 42299 (package of 2) named in the RHT50 ordering information. ## About this New unit This is a brand-new, factory-sealed unit, supplied exactly as it arrives from the manufacturer and backed by the full manufacturer warranty. For the exact configuration, available options, included accessories, or current lead time for your application, our Test Architects can confirm the details before you order. ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 167.99 USD - **Vendor:** Extech - **Type:** Data Log - **Tags:** Data Logger, Extech, Manufacturers, Meters & DAQ, product_manual_group_2, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 167.99 USD | In stock | ## Images - Extech RHT50 Humidity/Temperature/Pressure Datalogger --- > Source: [ValueTronics](https://valuetronics.com/products/rht50-extech-data-logger-new) > Updated: 2026-06-20