---
product_id: 369501304
title: "ERAY Digital Psychrometer Thermometer Hygrometer with Backlight, Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included"
brand: "eray"
price: "€ 74.97"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/369501304-eray-digital-psychrometer-thermometer-hygrometer-with-backlight-temperature-and-humidity
store_origin: DE
region: Germany
---

# Backlit LCD for Night Use 9V Battery Included, Ready Out-of-Box 4-in-1 Temp & Humidity Precision ERAY Digital Psychrometer Thermometer Hygrometer with Backlight, Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included

**Brand:** eray
**Price:** € 74.97
**Availability:** ✅ In Stock

## Summary

> 🌟 Master Your Microclimate with Precision & Style

## Quick Answers

- **What is this?** ERAY Digital Psychrometer Thermometer Hygrometer with Backlight, Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included by eray
- **How much does it cost?** € 74.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/369501304-eray-digital-psychrometer-thermometer-hygrometer-with-backlight-temperature-and-humidity)

## Best For

- eray enthusiasts

## Why This Product

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

## Key Features

- • **Read Anytime, Anywhere:** Backlit LCD ensures clear visibility even in complete darkness—never miss a critical reading.
- • **Smart Memory Functions:** Max/Min hold captures extreme values, while auto-shutdown conserves battery life after 12 minutes of inactivity.
- • **All-in-One Climate Insight:** Combines temperature, humidity, dew point & wet bulb readings for total environmental control.
- • **Flexible Measurement Modes:** Switch easily between °C/°F and normal, dew point, or wet bulb temperature modes to suit your needs.
- • **Versatile Professional Tool:** Ideal for HVAC, agriculture, meteorology, wine cellars, data rooms, and more—engineered for the discerning pro.

## Overview

The ERAY Digital Psychrometer Thermometer Hygrometer is a professional-grade 4-in-1 device measuring temperature, humidity, dew point, and wet bulb temperature. Featuring a backlit LCD for easy nighttime reading, flexible unit and mode switching, and smart memory functions, it’s powered by an included 9V battery. Perfect for HVAC, agriculture, meteorology, and specialized environments, it delivers precise environmental data to keep you ahead of the curve.

## Description

ERAY Digital Psychrometer Thermometer Hygrometer with Backlight, Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included

## Features

- 2-IN-1: This digital psychrometer is designed to combine the functions of humidity meter, temperature meter, wet bulb and dew point temperature. The dew point is a measure of how much water vapor actually in the air
- BACKLIGHT LCD DISPLY: ERAY temperature and humidity gauge is equipped with a bulb light in the LCD screen, user can easy to read the measurements in the darkness
- DUAL DISPLAY: Temperature range: -30 °C~60 °C (-22 °F~140 °F); Humidity range: 0~100 percent RH; Wet bulb/ Dew point temperature range: -50 °C~60 °C (-58 °F~140 °F)
- EASY TO USE: Unit switcher: °C and °F; Temperatue mode switcher: normal, dewpoint and wet bulb), Max Hold and Min Hold Function; Auto shutdown without operation after 12 minutes
- WIDELY USED: Used for HVAC, industry, agriculture, meteorology, medical, daily life, building engineer, paranormal investigator, in wine cellar, machine room, data storeroom and etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01FGV28E8 |
| Batteries | 1 9V batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Manganese |
| Battery Description | 6F22 9V |
| Best Sellers Rank | #106,161 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Humidifier Humidity Meters |
| Brand | ERAY |
| Brand Name | ERAY |
| Certification | Ce |
| Color | Yellow |
| Customer Reviews | 4.4 4.4 out of 5 stars (918) |
| Date First Available | September 8, 2016 |
| Description Pile | 6F22 9V |
| Included Components | A Digital Psychrometer Thermometer Hygrometer and 9V Battery Included |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.6 ounces |
| Item model number | SR-Y86 |
| Manufacturer | ERAY |
| Material Type | ABS |
| Model Info | SR-Y86 |
| Mounting Type | Tabletop |
| Part Number | SR-Y86 |
| Product Dimensions | 6.89"W x 1.38"H |
| Special Features | Non-Contact |
| Temperature Accuracy | 1°C |
| UPC | 708315157456 |
| Upper Temperature Rating | 60 Degrees Celsius |
| Voltage | 9 Volts |

## Product Details

- **Colour:** Orange
- **Brand:** ERAY
- **Item weight:** 0.16 Kilograms
- **Battery description:** Alkaline
- **Mounting type:** Tabletop

## Images

![ERAY Digital Psychrometer Thermometer Hygrometer with Backlight, Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included - Image 1](https://m.media-amazon.com/images/I/617khE1fE8L.jpg)

## Questions & Answers

**Q: Will this read temps immediately from room to room?**
A: it takes a moment to adjust. when temp stops that is it

**Q: Can it read dry bulb temps for outside A/C condensing units**
A: Dry bulb is just ambient temp...stick your thermometer or thermistor in the air and thats your dry bulb..thats why you never see these devices as listed for dry bulb because its just the regular temp reading..

**Q: Can I use this for reptile terrariums?**
A: Yes, you can.

**Q: Is there any way to have the backlight stay on constantly?**
A: Sorry, no way. For longer battery life, factory default the backlight will be off after 40s.

## Frequently Bought Together

- Digital Psychrometer Thermometer Hygrometer with Backlight, ERAY Temperature and Humidity Reader Meter Thermo-Hygrometer with Dew Point and Wet Bulb Temperature, 9V Battery Included(Yellow)
- General Tools MMD4E Digital Moisture Meter, Water Leak Detector, Moisture Tester, Pin Type, Backlit LCD Display With Audible and Visual High-Medium-Low Moisture Content Alerts, Grays

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-03*