how to switch from °F to °C?

Hold down on the up and down buttons at the same time

how many mats can be connected to this?

I have used these with a power splitter outlet into 2 mats and they work fine. The controler applies power till the programmed temperature is achieved then shuts off. Unit will cycle to maintain temps. I've heard the mats burn out frequently but with a controller I've never had a problem. I usually set for 54°F and tomatoes, peppers, tobbacco, leeks love it some plants pop up in 24 hrs. usually 2-3 days. A small low velocity fan will prevent damping(mold/mildews). Do not shut off heat and fan or damping will take hold in less than a day. And do not use anything other than sterile medium for seedlings/starts No fertilizers for couple weeks and definately no contaminates azomite will introduce spores/damping.

Is this a thermostat with a mat or does it work with any other mat?

It is just a thermostat. It works with anything heat outputting, like a heating lamp. The probe senses the temperature and turns the power on or off to whatever you plug into it.

Is the probe ok with saltwater ??

Instructions state "do not immerse temp probe in liquid" so no .

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VIVOSUN Digital Seedling Heat Mat Thermostat Controller 68-108

Product ID: 213261649

Details

Brand
VIVOSUN
Colour
Green
Display Type
Digital
UPC
742920469641
Voltage
230 Volts

⚡Energy-efficient low power draw

📱Digital display for easy monitoring

🌡️Precise temp control 68-108°F

€ 102.64

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Description

🌱 Grow smarter, not harder — perfect heat, zero hassle!

ENERGY SMART OPERATION - Consumes minimal electricity, saving costs while nurturing your plants.
TRUSTED BRAND RELIABILITY - VIVOSUN quality with 4.5-star rating from over 5,900 happy growers.
PRECISION TEMPERATURE CONTROL - Set and maintain ideal seedling warmth from 68 to 108°F effortlessly.
USER FRIENDLY DIGITAL DISPLAY - Clear, intuitive readout ensures you’re always in control.
DURABLE WATER RESISTANT DESIGN - Engineered to withstand humid, wet environments without fail.

The VIVOSUN Digital Seedling Heat Mat Thermostat Controller offers precise temperature regulation between 68-108°F with a clear digital display. Designed for energy efficiency and durability, it ensures optimal seedling growth while minimizing power consumption. Trusted by thousands of users, this lightweight, water-resistant controller is a must-have for any serious indoor gardener.

Specifications

ASIN	B015F4VFGI
Brand Name	VIVOSUN
Colour	Green
Country of Origin	USA
Customer Reviews	4.5 4.5 out of 5 stars (5,929)
Display Type	Digital
Manufacturer	VIVOSUN
Model Number	330101
Part Number	330101
UPC	742920469641
Voltage	230 Volts

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€ 102.64

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belgium.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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