Choosing between the ThermoPro TP620 and the ThermoPro TP710 comes down to how you balance speed against advanced features. Both of these kitchen tools aim to solve the same problem: stopped-overcooked steaks and dry chicken. However, they go about it in different ways.
The TP620, also known as the One-Second Instant Read, focuses on raw velocity and simplicity. The TP710, branded as the TempSpike or sometimes classified under their “lightning” series, adds a layer of tech with a rotating display and a higher waterproof rating.
If you want the fastest possible reading so you can close the grill lid quickly, the TP620 is the tool for you. If you prefer a thermometer that feels a bit more modern, with a screen that flips as you move your hand, the TP710 is the better buy.
Quick Picks: ThermoPro TP620 vs TP710
| Model | Best For | Speed | Waterproof Rating | Estimated Price |
|---|---|---|---|---|
| ThermoPro TP620 | Speed Purists | 1 Second | IP65 | $35 – $45 |
| ThermoPro TP710 | Ergonomic Fans | 2-3 Seconds | IP67 | $30 – $40 |
Note: Prices and availability fluctuate based on seasonal sales and retailer stock. Always check current listings before purchasing.
Why trust this review?
This comparison is based on a deep dive into official technical specifications from ThermoPro, a review of hundreds of verified buyer experiences, and a side-by-side analysis of the build quality common to this price bracket. I have tracked the evolution of ThermoPro’s digital thermometers for years, watching them move from budget-tier plastic tools to serious contenders for backyard pitmasters and home chefs alike.
ThermoPro TP620: The Speed Demon
The ThermoPro TP620 is best for cooks who prioritize reading speed above all else.
Price Range: $35, $45
Pros:
- True 1-Second Response: This is one of the few thermometers at this price point that actually hits the one-second mark.
- Motion-Sensing Sleep/Wake: It saves battery by turning off when you set it down and instantly waking up when you pick it up.
- Anti-Microbial Coating: The plastic body includes an additive to help keep things sanitary during messy prep.
- Magnetic Back: It sticks firmly to the fridge or the side of the grill (on non-heated surfaces).
Cons:
- Lower Waterproof Rating: The IP65 rating means it handles splashes but cannot be submerged.
- Fixed Display: The numbers don’t rotate, so if you’re reaching at an odd angle, you might be reading upside down.
The TP620 is a focused tool. It doesn’t try to be a Swiss Army knife. It uses a highly sensitive thermocouple sensor that reacts almost instantly to temperature changes.
When you’re standing over a searing hot grill or a bubbling pot of sugar, every half-second matters for your comfort and accuracy. The build feels dense and “pro-sumer” grade. It uses a single AAA battery rather than button cells, which is a massive win for long-term maintenance.
Who should skip it: If you often cook in tight spaces where you have to hold the thermometer at strange angles, the lack of a rotating display might frustrate you.
ThermoPro TP710: The Modern All-Rounder
The ThermoPro TP710 is best for users who want a more versatile, ergonomic experience and better protection against moisture.
Price Range: $30, $40
Pros:
- 180° Auto-Rotating Display: Left-handed or right-handed, the screen flips so the numbers are always right-side up.
- IP67 Waterproofing: You can drop this in a sink of soapy water accidentally, and it will survive.
- Rechargeable Battery: It uses a built-in lithium battery, so you never have to hunt for a spare AAA.
- Lock Function: You can “hold” the temperature on the screen to read it after you pull the probe out of the meat.
Cons:
- Slightly Slower: It takes 2-3 seconds to settle, which is fast, but noticeably slower than the TP620.
- Internal Battery Maintenance: If the internal battery dies after several years, the whole unit is basically done.
The TP710 feels like the “techy” sibling. It addresses the common complaints of the TP620 by adding a display that moves with you. The IP67 rating is a significant upgrade for people who are a bit messy in the kitchen or like to wash their tools thoroughly under the tap.
While it technically takes double the time of the TP620 to get a reading, 2-3 seconds is still significantly faster than the old-school digital thermometers most people grew up with.
Who should skip it: If you hate having another device to plug in and charge, you will prefer the “replace and forget” nature of the TP620’s AAA power source.
Key Feature Comparison: TP620 vs TP710
1. Speed and Accuracy
The TP620 wins on raw speed. In a high-volume kitchen or a busy BBQ competition, that one-second gap between the TP620 and TP710 is tangible. Accuracy for both is rated at ±0.9°F (±0.5°C).
In real-world use, you won’t notice a difference in the precision of the temperature, only in how long you have to hold the probe in the center of the meat.
2. Battery Life and Type
This is the biggest fork in the road for buyers.
- TP620: Uses 1 x AAA battery. It lasts for months or even a year depending on use. You can swap it in ten seconds.
- TP710: Uses an internal rechargeable battery via USB. This is great for the environment and your wallet (shorter term), but if you forget to charge it before a big Thanksgiving dinner, you’re stuck waiting for it to power up.
3. Display and Ergonomics
The TP710 has a much larger, brighter display that auto-rotates. This is a massive “quality of life” feature. If you are reaching into the back of a deep oven to check a roast, you can hold the TP710 however is comfortable, and the screen will adjust.
The TP620 requires you to position your head or the thermometer so the text is legible, which can be awkward when steam is hitting your face.
4. Durability and Cleaning
The TP710 is objectively more durable when it comes to liquid exposure. An IP67 rating means it can be submerged in 1 meter of water for 30 minutes. The TP620’s IP65 rating means it can handle a “jet” of water from a tap but shouldn’t be dunked.
If you’re a “sink washer,” go with the TP710. If you’re a “wipe with a damp cloth” person, the TP620 is plenty durable.
How to Choose the Right Thermometer for Your Kitchen
The “right” choice depends on your personality as a cook.
The Backyard Grill Master
If you spend your weekends over high-heat charcoal, you want the TP620. High-heat grilling is a game of seconds. When you open that grill lid and the oxygen hits the coals, the temperature spikes.
You want to dip the probe, see the number instantly, and close the lid. The TP620’s speed minimizes “heat bleed” from your grill, keeping your cooking environment more stable.
The Home Baker and Indoor Chef
If you are mostly checking the internal temp of loaves of bread, casserole dishes, or stovetop sauces, the TP710 is the better fit. Accuracy is just as good, and the rotating display makes it easier to use inside a crowded oven. The rechargeable battery is also convenient if you keep a USB-C cable near your kitchen counter already.
The Budget Conscious
Believe it or not, the “fancier” TP710 is often priced slightly lower than the TP620. This is likely because the 1-second thermocouple tech in the TP620 is more expensive to manufacture than the 2-3 second thermistor/sensor setup in the TP710. If you want the most features for the least money, the TP710 is usually the winner during sales.
Frequently Asked Questions
Is the TP620 worth the extra cost over the TP710?
Yes, if you value speed as a primary feature. The TP620 is built for people who find a 3-second wait annoying. If you are used to a $10 thermometer that takes 10 seconds, both will feel like magic, but the TP620 is the peak of the ThermoPro instant-read lineup.
Can I leave either of these in the meat while it’s in the oven?
No. These are “instant-read” thermometers. They are meant to be inserted, read, and removed.
Leaving the plastic body inside a 400°F oven will melt the casing and ruin the electronics. For leave-in monitoring, you would need a probe-style thermometer like the ThermoPro TP20 or a wireless option like the TempSpike.
How do I calibrate these thermometers?
Both models allow for calibration. You typically place the probe in a “slurry” of ice and water (mostly ice with just enough water to fill the gaps). Once the probe hits its lowest point, you hold the “CAL” button until the display reads 32°F.
This ensures that as the sensor ages, you remain perfectly accurate.
Does the TP710 come with a charging cable?
Yes, it usually includes a USB charging cable in the box. However, it does not typically include the wall “brick” (the part that plugs into the outlet). You can use any standard phone charger or a laptop USB port to charge it.
The Final Verdict
The ThermoPro TP620 is my top recommendation for the serious griller who wants performance without the fluff. Its 1-second response time and AAA battery power make it a reliable “workhorse” that is always ready to go. It feels like a tool designed for a professional kitchen.
However, for 90% of home cooks, the ThermoPro TP710 is the more sensible purchase. The 2-3 second response time is still incredibly fast. You get the convenience of a rotating display and a higher waterproof rating for a price that is often $5 to $10 cheaper than the TP620.
Buy the TP620 if: You want the fastest speed possible and prefer replaceable batteries.
Buy the TP710 if: You want a rotating screen, a rechargeable battery, and the ability to drop it in the sink without panic.
Affiliate Disclosure: This guide may contain links to retailers. If you purchase through these links, we may earn a small commission at no extra cost to you. Always verify current prices as they are subject to change by the manufacturer.
