---
product_id: 2171008
title: "Fieldpiece PRH2 Digital Psychomotor"
brand: "fieldpiece"
price: "฿9655"
currency: THB
in_stock: true
reviews_count: 13
category: "Fieldpiece"
url: https://www.desertcart.co.th/products/2171008-fieldpiece-prh2-digital-psychomotor
store_origin: TH
region: Thailand
---

# Bright backlit display Pocket-sized precision Long-lasting AA battery power Fieldpiece PRH2 Digital Psychomotor

**Brand:** fieldpiece
**Price:** ฿9655
**Availability:** ✅ In Stock

## Summary

> 📐 Precision in your pocket, performance on demand.

## Quick Answers

- **What is this?** Fieldpiece PRH2 Digital Psychomotor by fieldpiece
- **How much does it cost?** ฿9655 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/2171008-fieldpiece-prh2-digital-psychomotor)

## Best For

- fieldpiece enthusiasts

## Why This Product

- Trusted fieldpiece brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Crafted with trusted American quality and reliability for professionals who demand the best.
- • **Pocket-Sized Power:** Clip it on and carry precision wherever you go—fits right in your pocket like a pen.
- • **Bright Backlit Display:** Work confidently in any lighting condition with a crystal-clear, illuminated screen.
- • **Sensor Protection Twist Cap:** Keep your sensitive sensors safe and ready with a durable twist cap—no compromises on accuracy.
- • **Rapid Psychrometric Readings:** Instantly measure relative humidity, wet bulb, dew point, and dry bulb temps with unmatched speed.

## Overview

The Fieldpiece PRH2 Digital Psychromotor is a compact, battery-powered tool designed for fast, accurate psychrometric measurements including relative humidity, wet bulb, dew point, and dry bulb temperatures. Its pocket-sized design with a protective twist cap and bright backlit display makes it ideal for HVAC professionals needing reliable, on-the-go diagnostics. Made in the USA, it combines durability with precision for everyday field use.

## Description

Use the pocket sized PRH2 for incredibly fast and accurate everyday psychometrics. Get your percent relative humidity, wet bulb, dew point, and dry bulb temperatures quickly and easily. made in United States. Manufactured by Fieldpiece instruments Inc.

Review: Great tool - Very accurate and works great while being able to put in your pocket
Review: Small and functional - Working great 👍. Looks sensitive so keep it safe, otherwise works great.

## Features

- Use for walk around testing or in-duct analysis
- Clip it to your pocket just like a pen
- Narrow tip for insertion into ductwork
- Twist cap protects sensors when not in use
- Bright backlight

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0087SD43W |
| Batteries | 1 AA batteries required. |
| Best Sellers Rank | #124,702 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #210 in Multi Testers |
| Brand | Fieldpiece |
| Date First Available | May 31, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item dimensions L x W x H | 0.09 x 3 x 2 inches |
| Item model number | PRH2 |
| Manufacturer | Fieldpiece Instruments Inc |
| Measurement Type | Psychrometer |
| Power Source | Battery Powered |
| Product Dimensions | 0.09 x 3 x 2 inches |
| Specification Met | Some |
| Style | Digital |
| UPC | 872641002664 696335209166 |
| Upper Temperature Rating | 120 Degrees Celsius |

## Product Details

- **Brand:** Fieldpiece
- **Item Weight:** 3.2 Ounces
- **Item dimensions L x W x H:** 0.09 x 3 x 2 inches
- **Power Source:** Battery Powered
- **Style:** Digital

## Images

![Fieldpiece PRH2 Digital Psychomotor - Image 1](https://m.media-amazon.com/images/I/61Wt5e-CwAL.jpg)

## Questions & Answers

**Q: how can i use this**
A: When you go in to the customers house turn on The A/C take WB (wet bulb) reading at the return air grill then go outside and take a dry bulb measurement at condensing unit or heat pump use your measurements with your refrigerant gauges. And calculate your subcooling or superheat depending on weather you have a TXV or not, I just enter the values in to my SMAN4 gauges and it calculates it for me the I either add or remove (reclaim) refrigerant to reach my subcooling or superheat or you can type in Fieldpiece PRH2 in to You Tube and watch a video on how to use it

**Q: Tip diameter and lenght? For measuring WB temp of air entering and leaving evaporator?**
A: The PRH2 is an economical, stand-alone psychrometer that measures wet bulb, %RH, dew point and dry bulb temperatures, all in the convenience of a pocket tool. Portable enough to clip into a pocket, the PRH2 is great for walk-around testing, and the pen-like psychrometer features a slim, 2” long tip to take measurements easily inside ductwork.

The PRH2 has a bright backlight so it’s easy to read in dark areas and runs on a single AA-battery that lasts up to 100 hours.

**Q: In what way is this device a psychomotor?**
A: It's not a psychomotor, it's a psychrometer.

**Q: Can this be calibratesmf by the owner on his own?**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great tool
*by C***Y on October 17, 2023*

Very accurate and works great while being able to put in your pocket

### ⭐⭐⭐⭐⭐ Small and functional
*by K***N on January 17, 2026*

Working great 👍. Looks sensitive so keep it safe, otherwise works great.

### ⭐⭐⭐⭐ Nice tool but beware of the plastic threads on cap
*by W***T on April 16, 2017*

The PRH2 is a handy tool and I've used it numerous times already in the short time I've had it to determine Wet bulb for calculation of target superheat. The size is just right and I keep it in my Veto TP4 when not in use. I wanted to give it 5 stars but the plastic threading of the cap and the unit don't seam to match very well. In fact if your not careful you can easily, very easily cross thread it. So be careful. I can get the cap to screw on but it's less than a full turn, which doesn't seem natural. If this cap wasn't able to be secured then it would be on its way back. So to summarize I really like this tool, it works well and it will remain in my bag.

## Frequently Bought Together

- Fieldpiece PRH2 Digital Psychomotor
- Appion MGAVCT 1/4" MegaFlow Vacuum-Rated Valve Core Removal Tool
- Klein Tools 69140 K-Type Thermometer, Pipe Temperature Clamp for HVAC, Measures -4 to +212 Degrees Fahrenheit

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**Shop now:** [https://www.desertcart.co.th/products/2171008-fieldpiece-prh2-digital-psychomotor](https://www.desertcart.co.th/products/2171008-fieldpiece-prh2-digital-psychomotor)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-21*