just to be clear. This is designed to keep something at a certain temp? So the hot end i see heats up between the specific temps listed?

The silver probe tip is the temperature sensor itself. That's what detects the temperature of what ever you are monitoring. When it's above the High temp setting (red) the relay contacts K1 and K0 close so that would activate a fan or what ever you want to monitor. Depending on how you have it setup, if the temp gets below the Low (green) temp, then the relay contacts (K0/K1) open to shut off any cooling you might have running.

Can the relay be driven by 5V DC?

As the description says, the board itself is driven by 5v which powers the relay. The ratings it lists is what the relay contact load can carry.

If the board loses power for an extended time, do the settings reset?

The settings will be saved when the power off.

Upon power up, is P0 set to cooling or heating?

First powered on, the device is cooling mode(can be changed).

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DC 5V Digital Thermostat Module -58℉ to 257℉ Fahrenheit Temp Display Temperature Controller Board with 20A Relay Waterproof Sensor Probe Dual LED Display Red Green

DC 5V Digital Thermostat Module -58℉ to 257℉ Fahrenheit Temp Display Temperature Controller Board with 20A Relay Waterproof Sensor Probe Dual LED Display Red Green

Product ID: 78308126

⚡20A high-load relay

🌡️Wide -58℉ to 257℉ range

🔴🟢Dual red & green LED display

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Description

🌡️ Control your climate like a pro — precision meets power!

FAST RELIABLE - 0.5-second refresh rate keeps your environment perfectly tuned
INSTANT FEEDBACK - Dual LED display with red & green indicators for clear status
POWERHOUSE RELAY - Handles up to 20A load for robust HVAC or industrial use
WATERPROOF SENSOR INCLUDED - 1-meter NTC metal probe built for durability and accuracy
PRECISION AT YOUR FINGERTIPS - Ultra-fine 0.1℉ resolution for critical temp control

The DC 5V Digital Thermostat Module offers professional-grade temperature control from -58℉ to 257℉ with ultra-precise 0.1℉ resolution in critical ranges. Featuring a dual red and green LED display for instant status updates, a durable waterproof 1-meter NTC sensor, and a powerful 20A relay, this compact device ensures fast, reliable, and accurate temperature management for HVAC, industrial, or home automation projects.

Specifications

ASIN	B076Y9XT3L
Additional Features	Fan Control
Best Sellers Rank	#175,929 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #244 in Temperature Controllers
Brand	LM YN
Brand Name	LM YN
Color	Green,red
Control Method	Touch
Control Type	Button Control
Controller Type	Thermostat
Customer Reviews	4.3 out of 5 stars 20 Reviews
Display Type	LED
Included Components	Digital Thermostat Module
Item Dimensions D x W x H	0.63"D x 0.63"H
Item Weight	27.22 g
Manufacturer	LM YN
Manufacturer Part Number	DT-40932
Manufacturer Warranty Description	1 year.
Material Type	Metal
Model Number	LMYNDT05
Mounting Type	Wall Mount
Number of Items	1
Number of Packs	1
Power Source	Battery Powered
Product Dimensions	0.63"D x 0.63"H
Product Style	Digital
Screen Size	46 millimeters
Shape	Rectangular
Special Feature	Fan Control
Specific Uses For Product	Thermostat Control
Temperature Control Type	Digital
UPC	612957708252
Unit Count	1 Count
Voltage	125 volts

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₨365

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered 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 Seychelles.

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TrustScore 4.5 | 7,300+ reviews

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