---
product_id: 678421621
title: "Extech 445703 Big Digit Indoor Humidity & Temperature Meter, Digital Hygrometer Thermometer with Min/Max & Alarm for Home, Office, Greenhouse | 10-99%RH, 14-140F, 1in big-digit LCD, +/-5%RH, MIN/MAX reset, tilt stand, wall mount bracket"
brand: "extech"
price: "S$94"
currency: SGD
in_stock: true
category: "Extech"
url: https://www.desertcart.sg/products/678421621-extech-445703-big-digit-indoor-humidity-and-temperature-meter-digital
store_origin: SG
region: Singapore
---

# Humidity range 10-99% RH with ±5% accuracy 1-inch big digit LCD for instant readability Temperature range 14-140°F (-10 to 60°C) Extech 445703 Big Digit Indoor Humidity & Temperature Meter, Digital Hygrometer Thermometer with Min/Max & Alarm for Home, Office, Greenhouse | 10-99%RH, 14-140F, 1in big-digit LCD, +/-5%RH, MIN/MAX reset, tilt stand, wall mount bracket

**Brand:** extech
**Price:** S$94
**Availability:** ✅ In Stock

## Summary

> 🌟 Big Digits, Bigger Insights — Elevate Your Space’s Climate IQ!

## Quick Answers

- **What is this?** Extech 445703 Big Digit Indoor Humidity & Temperature Meter, Digital Hygrometer Thermometer with Min/Max & Alarm for Home, Office, Greenhouse | 10-99%RH, 14-140F, 1in big-digit LCD, +/-5%RH, MIN/MAX reset, tilt stand, wall mount bracket by extech
- **How much does it cost?** S$94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/678421621-extech-445703-big-digit-indoor-humidity-and-temperature-meter-digital)

## Best For

- extech enthusiasts

## Why This Product

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

## Key Features

- • **Flexible Placement:** Comes with a tilt stand and wall mount bracket—perfect for your office, home, or greenhouse setup.
- • **Ready Out of the Box:** Includes AAA battery for immediate use—no extra purchases, no delays.
- • **Instant Clarity, Always:** 1-inch oversized digits on a dual display ensure you never miss a reading, even from across the room.
- • **Precision You Can Trust:** Accurate humidity and temperature measurements with ±5% RH and ±1°C precision keep your environment perfectly monitored.
- • **Track Trends Effortlessly:** Min/Max memory with reset function lets you capture environmental highs and lows for smarter decision-making.

## Overview

The Extech 445703 is a high-precision indoor hygrometer and thermometer featuring a large 1-inch digit LCD for easy visibility. It measures humidity from 10 to 99% RH and temperature from 14 to 140°F with ±5% RH and ±1°C accuracy. Equipped with Min/Max memory, a tilt stand, and wall mount bracket, it’s designed for versatile placement in homes, offices, or greenhouses. Powered by a single AAA battery, it delivers reliable environmental monitoring right out of the box.

## Description

Product Description This Big Digit Hygro-Thermometer has 1 in. digits on a super large LCD. It simultaneously displays humidity from 10 to 99% and temperature from 14 to 140°F or -10 to 60°C. Accuracy is ±5%RH and ±1.8°F/±1°C. Maximum/minimum with reset function. Complete with stand, wall mounting bracket and 1 AAA battery. From the Manufacturer Big Digit Hygro-Thermometer measures Humidity from 10 to 99%RH and Temperature from 14 to 140 degrees F (-10 to 60 degrees C). It features a dual display with 1 inch digits and a Min/Max with reset function. Comes complete with stand, wall mounting bracket, and one AAA battery.

## Features

- Three axis (X, Y, Z) electromagnetic field measurement (30Hz to 300Hz)
- Humidity: 10 to 99 percentRH
- Ideal for EMF measurements around power lines, electrical appliances and industrial devices
- Wide measuring ranges (3 ranges of µTesla or mGauss)
- Big digit LCD display, Data hold

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00069ECFY |
| Battery Description | AAA |
| Best Sellers Rank | #110,295 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #48 in Lab Digital Thermometers |
| Brand Name | Extech |
| Color | Gray,Green |
| Customer Reviews | 4.4 4.4 out of 5 stars (311) |
| Global Trade Identification Number | 00793950445730 |
| Included Components | Stand, Wall mounting bracket and 1 AAA Battery |
| Item Dimensions W x H | 3.9"W x 4.3"H |
| Item Length | 1 Inches |
| Item Type Name | Big Digit Digital Hygrometer Indoor Thermometer Humidity Monitor with Temperature Humidity Gauge |
| Item Weight | 0.02 Kilograms |
| LowerTemperature Range | 14 Degrees Fahrenheit |
| Manufacturer | Extech |
| Model | 445703 |
| Mounting Type | Wall Mount |
| Operating Humidity | 99 percent |
| Part Number | 445703 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Temperature Accuracy | ±1°C |
| Temperature Reading Accuracy | plus_minus_5_degrees_fahrenheit |
| UPC | 733353790228 756635763956 793950445730 785533635805 |
| Unit Count | 1.0 Count |
| Upper Temperature Range | 140 Degrees Fahrenheit |
| Voltage | 1.5 Volts (DC) |
| Warranty Description | 1 Year |

## Product Details

- **Battery Description:** AAA
- **Brand:** Extech
- **Color:** Gray,Green
- **Item Weight:** 0.02 Kilograms
- **Product Dimensions:** 3.9"W x 4.3"H

## Images

![Extech 445703 Big Digit Indoor Humidity & Temperature Meter, Digital Hygrometer Thermometer with Min/Max & Alarm for Home, Office, Greenhouse | 10-99%RH, 14-140F, 1in big-digit LCD, +/-5%RH, MIN/MAX reset, tilt stand, wall mount bracket - Image 1](https://m.media-amazon.com/images/I/61wrUv+oGRL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Frequently Bought Together

- Extech 445703 Digit Thermometer
- Extech 445580 Humidity and Temperature Pen Sized Meter with Pocket Clip

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**Shop now:** [https://www.desertcart.sg/products/678421621-extech-445703-big-digit-indoor-humidity-and-temperature-meter-digital](https://www.desertcart.sg/products/678421621-extech-445703-big-digit-indoor-humidity-and-temperature-meter-digital)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-07-13*