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Us](https://www.setra.com/help-center) [Products](https://www.setra.com/products#all) > [Humidity](https://www.setra.com/products#humidity) Model SRH - Duct - ![Model SRH Duct Humidity Sensor](https://www.setra.com/hubfs/model-srh-duct-humidity-sensor.jpg "Model SRH Duct Humidity Sensor") Setra’s SRH low profile duct mount humidity sensor offers both relative humidity and temperature sensing with multiple options for accuracy, temperature and outputs. [Download Data Sheet](https://www.setra.com/hubfs/Setra_Product_Data_Sheets/Model_SRH_Duct_Spec_Sheet_2015_.pdf) [Download Operating Instructions](https://www.setra.com/hubfs/Setra_Product_Operating_Instructions/Setra_Model_SRH_Operating_Instructions.pdf) [**CONFIGURE >**](https://ecatalog.setra.com/ecatalog/configurators/srh?_ga=2.111571207.269698175.1516648072-1730434424.1506972533) Product description Setra’s SRH duct mount humidity sensor offers optional active temperature with choice of 4 to 20 mA or user-selectable 0 to 5 and 0 to 10 VDC output and passive temperature with choice of thermistor or RDT output. The sensor is housed in a polycarbonate 94 V-0, NEMA 4 enclosure making it suitable for harsh environments. The SRH duct mount sensor gives the user the choice of 2%, 3% or 5% RH accurate to meet the requirements of typical HVAC applications. It features a removable sensor tip, NIST tracability and a durable capacitive sensor capable of a 0 to 99% full scale RH measurement and recovery of 100% saturation. **Replaceable Sensor Tip for Easy Calibration** - The SRH offers the industry's easiest replaceable sensor tip. Removing it requires no special training and can be easily replaced by the end user. No calibration is needed because each sensor module is factory calibrated before shipping, reducing downtime during service intervals. **Active & Passive Temperature Outputs** - The SRH can be ordered with either a passive (RTD Thermistory) or Active (Analog) temperature output, enabling 2 measurements from 1 device. Units configured with the active temperature options feature jumper selectable Tspan ranges 40°C, 50°C and 60°C. Docs & Downloads [Model SRH Duct Mount Data Sheet](https://www.setra.com/hubfs/Setra_Product_Data_Sheets/Model_SRH_Duct_Spec_Sheet_2015_.pdf?t=1516653572345) [Model SRH Operating Instructions](https://www.setra.com/hubfs/Product_Operating_Instructions/Setra_Model_SRH_Operating_Instructions.pdf?t=1516653572345) Features & Benefits - Active Temperature With Jumper Selectable - Excellent Reliability Through ASIC Technology - Robust Capacitive Sensor Design - Low Cost of Ownership - ±2%, ±3% and ±5% FS Accuracy - Replaceable Sensor Tip - Quick Mount, 2 Screw Install With Plug-In Terminal Wiring - 1 Year Warranty - CE and RoHS Compliant Applications - HVAC/R Control - Indoor Air Quality (IAQ) - Laboratories - Antique Preservation Related Products ## Model SRH 200 ![setra-srh200-humidity-thumbnail](https://www.setra.com/hs-fs/hubfs/setra-srh200-humidity-thumbnail.jpg?width=190&name=setra-srh200-humidity-thumbnail.jpg)   [VIEW PRODUCT](https://www.setra.com/product/humidity/model-srh200) ## Model SRH - Outdoor Air ![model-srh-wall-outdoor-air](https://www.setra.com/hs-fs/hubfs/model-srh-wall-outdoor-air.jpg?width=190&name=model-srh-wall-outdoor-air.jpg)   [VIEW PRODUCT](https://www.setra.com/product/humidity/model-srh-outdoor-air) ## Model SRH - WALL ![model-srh-wall-humidity-sensor-thumb.jpg](https://www.setra.com/hs-fs/hubfs/model-srh-wall-humidity-sensor-thumb.jpg?width=250&name=model-srh-wall-humidity-sensor-thumb.jpg "model-srh-wall-humidity-sensor-thumb.jpg") [VIEW PRODUCT](https://www.setra.com/product/humidity/model-srh-wall) - [**](https://www.facebook.com/SetraSystems) - [**](https://twitter.com/setrasystems) - [**](https://www.youtube.com/user/SetraSystems) - [**](https://www.linkedin.com/company/setra-systems) - [**](https://www.instagram.com/setrasystemsinc/) [Service & Calibration](https://www.setra.com/support/service) | [Products](https://www.setra.com/products) | [Service/RMA](https://www.setra.com/support/service) | [Supplier](https://www.setra.com/support/supplier) | [Customer](https://www.setra.com/support/customer) | [Contact Us](https://www.setra.com/contact-us) | [FAQs](https://faq.setra.com) | [About](https://www.setra.com/about) | [Careers](https://careers.fortive.com/gems-setra/) | [Request Quote](https://www.setra.com/request-a-quote) | [Blog](https://www.setra.com/blog) Cookie Settings 159 Swanson Road Boxborough, MA 01719 | [orders@setra.com](mailto:orders@setra.com) [+1 (978) 263-1400 ](tel:+19782631400) Copyright © 2026 Setra Systems. 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