do I need to have all 4 leads connected at the same time?

According to the instruction manual, yes. A bit of a pain.

What type of probes come with it? (temp range) i will be using it to check the heat of metal out of a forge, thanks!

Look at the 4th pic in the add - it says: wire probe range 58F ~ 752F. You can buy proves that will work with it that go to 2500F

I'm annealing brass, how fast does this read temperature? Response time?

The response is very fast (one or two seconds), but there is some "bounce" and noise in the readings.

Is this good to test a heat press?

I use it to accurately gauge the temp of roasting coffee beans, it gives an accurate reading, I have never used a heat press so can not comment on same

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Thermocouple Thermometer, RISEPRO 4 Channel K Type Digital Thermometer Thermocouple -200~1372°C/2501°F Sensor HT-9815

Product ID: 263503484

Details

Age range (description)
Adult
Brand
RISEPRO
Colour
White
Included components
Battery
Special features
High Accuracy

⚡ultra-fast 500ms response time

📊high precision ±1°C accuracy >100°C

🌡️4-channel simultaneous temp readout

Description

🌡️ Stay cool, stay precise — master every degree with RISEPRO!

SPEEDY SENSING - Instant 500ms response keeps you ahead of the curve
READY FOR ACTION - Includes 4 probes, battery, and sleek carrying pouch—gear up instantly
MULTI POINT MASTERY - Monitor up to 4 temps at once for total control
PRECISION PERFECTED - Accurate within ±1°C above 100°C for reliable data
USER FRIENDLY INTERFACE - Backlit LCD with °C/°F/K toggle for effortless reading anytime

The RISEPRO HT-9815 is a professional-grade 4-channel K-type digital thermocouple thermometer designed for simultaneous temperature monitoring from -200°C to 1372°C. Featuring a rapid 500ms response time, ±1°C accuracy above 100°C, and a backlit LCD display with selectable units, it’s ideal for precise applications like brewing, grilling, and HVAC diagnostics. Complete with four probes, battery, and a carrying pouch, it delivers reliable, versatile performance in a compact, user-friendly package.

Specifications

ASIN	B07D9JF5SD
Additional Features	High Accuracy
Age Range Description	Adult
Brand Name	RISEPRO
Color	White
Customer Reviews	4.2 4.2 out of 5 stars (294)
Display Type	LCD
Included Components	Battery
Indoor Outdoor Usage	Outdoor
Item Length	200 Millimeters
LowerTemperature Range	200 Degrees Celsius
Manufacturer	RISEPRO
Model	8541957450
Model Name	8541957450
Number of Batteries	1 9V batteries required. (included)
Outer Material	Plastic
Part Number	HT-9815
Power Source	Battery Powered
Product Care Instructions	Wipe Clean
Resolution	0.1 degrees_celsius
Response Time	500 Milliseconds
Reusability	Rechargeable
Specification Met	NIST
UPC	602860875431
Unit Count	1 Count
Upper Temperature Range	1372 Degrees Celsius

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