TP-Link Tapo T315 Review: Crystal-Clear 2.7″ E-Ink Smart Thermo-Hygrometer with 24/7 Temperature & Humidity Monitoring

Hello, I’m Itsuki (@saigalog), someone who prefers to avoid LCD displays that become hard to see in the dark.
We have thermometers with LCD displays placed all around our home, but I had given up, thinking that it’s unavoidable that they become hard to see at night or in the shadows.
The TP-Link “Tapo T315” that I’m reviewing this time overturns that common sense about thermometers, featuring a 2.7-inch E-ink display in a smart digital thermometer and hygrometer.
An E-ink display is what’s commonly known as electronic paper, characterized by being easy to read and gentle on the eyes, as well as low power consumption.
What’s excellent is not only the screen, but also that it is equipped with a Swiss-made high-precision sensor that monitors temperature and humidity 24 hours a day.
It keeps logs so you can check the history at any time, and you can also operate smart devices using temperature and humidity values as triggers.
In this article, I will thoroughly review the easy-to-read and highly accurate smart digital thermometer and hygrometer “TP-Link Tapo T315”!
Pros
Cons
*This article was created with a product provided by the manufacturer.
Table of Contents
What’s Included with TP-Link Tapo T315
The outer box of the “TP-Link Tapo T315” features a simple design based on white and blue.

The product specifications are listed on the back.

The following items are included as package contents.

What’s Included with TP-Link Tapo T315
- Tapo T315 unit
- AAA alkaline batteries × 2
- Double-sided tape
- Quick start guide
AAA alkaline batteries are inserted by removing the cover on the back of the unit.

You can attach it to your desired location using the double-sided tape.


TP-Link Tapo T315 Specifications
TP-Link’s “Tapo T315” is a smart digital thermometer and hygrometer equipped with a 2.7-inch E-ink display that monitors temperature and humidity 24 hours a day.

Main features are the following five.

Features of TP-Link Tapo T315
- Works with Tapo devices
Automate your home - 2.7-inch E-ink display
- High-precision sensor
- Up to 2 years
Long battery life - Free storage & export
Up to 2 years of data
The main unit specifications are as follows.
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| Product Name | TP-Link Tapo T315 |
|---|---|
| Dimensions | 25 × 62 × 62 (mm) |
| Weight | 70 g |
| Operating Temperature | -20~60ºC / -4~140ºF (Display range: 0~50ºC / 32~122ºF) |
| Operating Humidity | 0%~99%RH |
| Display | 2.7″ E-ink |
| Power Requirements | 3.0V DC (AAA batteries/LR03×2) |
| Hub | Required |
| Wireless | 868 / 922MHz |
| Temperature Accuracy | ±0.3°C /±0.54°F |
| Humidity Accuracy | ±3%RH |
| Data Update | 2 seconds |
Design
The design of the “TP-Link Tapo T315” features a simple two-tone color scheme of white and gray.

It features a 2.7-inch E-ink display, characterized by its crisp and highly readable visibility.


There are vents for detecting temperature and humidity on the top.

There is a button on the right side.


The front-facing side functions as a stand for placement.

The back features the “tapo” logo and serves as the battery cover.

Open the battery cover and insert two AAA batteries to use it.

The back is equipped with a magnet, allowing it to be attached to metal surfaces such as a refrigerator.

Size & Weight
The “TP-Link Tapo T315” measures 25 × 62 mm.

The height is 62 mm.

Here’s how the size compares to a smartphone (iPhone 13 Pro).

Its compact size allows it to be placed anywhere without taking up space.

The weight was 70 g.

Features
The “TP-Link Tapo T315” is a smart digital thermometer and hygrometer that lets you check your room’s climate at a glance.

It features an easy-to-read 2.7-inch E-ink display.

Features of the E-ink Display
- Reflective screen
Energy-efficient and easy on the eyes - Wide viewing angle
Check it from any angle - Clear and sharp
Designed to be easy to read even from a distance - Glare-free
Avoids poor visibility in bright environments
It is equipped with a high-precision Swiss-made sensor that collects and updates data every 2 seconds.

If the temperature or humidity goes outside the set range, the app will notify you with an alert.

Using the “TP-Link Tapo T315” as a trigger, you can automatically turn devices such as humidifiers and fans ON/OFF.

Up to 2 years of data is stored in the cloud for free, and you can receive and review the data files at any time.

It runs on AAA batteries and, with power-saving technology, can be used continuously for up to 2 years.

Press the side button once to switch the temperature unit, and press it twice to switch the display positions of temperature and humidity.

The comfort level is displayed as an icon, making it a helpful indicator of a pleasant environment.

It can be installed wherever you like using the magnet or the included double-sided tape.

It is useful in various scenes and cases, such as cigar boxes and breeding cases.

You can manage everything with the smartphone app “Tapo”.

Smartphone App “Tapo”
First, complete the initial setup using the smartphone app “Tapo”.
On the Home screen, you can check the current temperature and humidity as well as the history.
In the Menu, you can manage smart actions and turn favorites ON/OFF.


In Smart Actions, you can configure various patterns.
In Device Settings, you can set or change the icon, name, temperature unit, and more.
You can choose the temperature unit from ℃ or ℉.
In the Comfort Zone, you can set temperature and humidity ranges and receive notifications when they go outside the defined zone.




Alexa is also supported, so you can control it with voice commands via a smart speaker.
TP-Link Tapo T315 Review Summary
In this article, we covered “【TP-Link Tapo T315 Review】Outstanding Visibility! A Smart Digital Thermo-Hygrometer with a 2.7-inch E-ink Display That Monitors Temperature and Humidity 24/7.”
Priced at around 3,000 yen, this product is very affordable.
If you are looking for a smart thermo-hygrometer that is easy to read and allows you to control smart devices using temperature and humidity as triggers, be sure to check out the TP-Link Tapo T315.
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