can this be used down Wi Fi, for remote monitoring?

No, unfortunately not. It’s Bluetooth only

C temps set on unit OK but do not appear on smartphone app

Tap the tree lines top left of home page in the app and select C or F

How many additional monitors does the app support? where can i buy them in uk, how much does each additional monitor cost and are they easy to set up

Not sure how many devices you can link too but I have 5 set up and you can buy them on Amazon and ebay

The specs don't mention any internal memory- can the unit store data when disconnected for download later? Or is recording only done by the app?

Data is stored in the device. A year apparently. When you connect a device via Bluetooth the data is copied to the app (and not deleted). If you connect another device (and app) it too gets all the data. So we have a pair of Apple devices both with the data. We have a couple of units, one where we collect data on a daily basis and another every couple of weeks. Both work well.

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TempPro TP357 Bluetooth Hygrometer, Mini Room Thermometer with Alerts

TempPro TP357 Bluetooth Hygrometer, Mini Room Thermometer with Alerts

Product ID: 387313005

Details

Battery description
AAA
Brand
TempPro
Colour
Item weight
0.06 Kilograms
Product dimensions
5.4W x 1.8H

📊2-year data storage

📶80m Bluetooth range

⏱️10s fast refresh rate

VT4593

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌡️ Stay ahead of the curve with TempPro — your smart climate guardian!

COMFORT AT A GLANCE - Intuitive face icon indicators simplify air quality status—dry, comfort, or wet—so you adjust with ease.
INSTANT SMART ALERTS - Customizable app notifications ensure you never miss critical temperature or humidity changes.
DATA DRIVEN DECISIONS - Up to 2 years of stored data empowers you to analyze trends and optimize your indoor climate.
PRECISION YOU CAN TRUST - ±0.5°C temperature & ±2% RH humidity accuracy keeps your environment perfectly balanced.
SEAMLESS REMOTE MONITORING - Stable 80m Bluetooth range means you stay connected to your space from anywhere at home.

The TempPro TP357 Bluetooth Hygrometer is a compact, highly accurate indoor thermometer and humidity monitor featuring ±0.5°C and ±2% RH precision. It offers a robust 80-meter Bluetooth range for remote monitoring, real-time updates every 10 seconds, and smart app alerts to keep your environment optimal. With intuitive comfort icons and up to 2 years of stored data, it’s designed for proactive climate control in any modern home.

Specifications

ASIN	B093PT1NL1
Battery Description	AAA
Best Sellers Rank	705 in Garden ( See Top 100 in Garden ) 6 in Hygrometers
Brand	TempPro
Colour	White-Bluetooth
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (8,521)
Included Components	1 x Indoor Thermometer Hygrometer, 1 x user manual, 1 x AAA batteries
Item Dimensions W x H	5.4W x 1.8H centimetres
Item Highlight	Humidity Meter&Temperature Monitor with Smart App and Data Recording, Humidity Sensor for Room Office(Previously ThermoPro)
Item Weight	0.06 Kilograms
Manufacturer	TempPro
Manufacturer Part Number	TP357
Model Number	TP357
Mounting Type	Tabletop
Number of Items	1
Number of Packs	1
Operating Humidity	10% to 95% RH
Temperature Accuracy	0.5 degrees_celsius
Temperature Reading Accuracy	plus_minus_0_point_5_degrees_celsius
Unit Count	1.0 count
Upper Temperature Rating	60 Degrees Celsius
Voltage	1.5 Volts

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