Thermoworks is our favorite thermometer producer because they are known for producing high quality, highly accurate thermometers and their Signals 4-channel thermometer follows suit. Signals was built for the serious BBQ pitmaster who wants to keep track of four different temperatures at once over Bluetooth and Wi-Fi. Signals retails for $229 and includes three cooking probes and one air probe.
Any modern pitmaster will have a remote thermometer that allows them to monitor the internal temperature of their meat. Thermoworks Signals has a total of four channels, meaning that you can monitor four separate temperatures. This means that you can be smoking a brisket, pork butt, and chicken all at the same time while also monitoring the air temperature inside of your pit. The Signals comes with three food probes and one air probe, which makes this the perfect arrangement for the probes.
Thermoworks Signals also comes with Bluetooth and Wi-Fi connectivity built-in. Bluetooth allows for dead-simple app setup while the Wi-Fi connectivity means that the Signals will remain connected to your network so that you can check your temperatures on the Thermoworks app from anywhere you have internet connectivity. While the wireless connectivity is an incredibly useful feature, you can also check your temperatures locally on the bright, backlit LCD display.
The LCD display is easy to read thanks to it being broken out into quadrants with the current temperature displayed the largest. You’re also able to label each quadrant with what you’re measuring. Within each quadrant, you can see the min. temp alarm that’s set as well as the max temp alarm that’s set. Along the top of the display, you can see the wireless connectivity signal, battery level, and volume level.
The back of the Signals body has a magnet attached, so you can slap it on the body of your so that it doesn’t take up space on your workspace. The LCD screen is angled upwards so you can view the screen without bending over to get face-to-face with it. The body of the Signals is IP66 rated, which means it’s splashproof and can handle a sudden rainstorm without any additional measures to waterproof it. One side of the Signals has four probe ports, each labeled 1 through 4. The same side has a USB-C port, which is used to charge the built-in rechargeable battery.
Speaking of labeled probe ports, the Signals also comes with four pairs of colored high-temp silicone rings that allow you to match the probe you’re inserting into your food with the coordinating probe port. The accuracy of the Signals probes is +/- 1.8F up to 248F, +/- 3.6F from 248F to 392F, and +/- 5.4F from 392F up to 572F. 572F is the maximum temperature that can be read on the Signals.
The free Thermoworks BBQ app allows you to easily label your channels, receive alerts, view graphs displaying the temperature data of your cook, and much more. The app will also save the data from your last 10 cooks in the cloud, allowing you to review them and learn from them. While Thermoworks’ app is fully featured, the user interface could use some work, though I understand Thermoworks isn’t a software company.
I used the Signals for a long brisket smoke a couple of weeks ago and found it to be really helpful to keep track of the temperature of the meat as well as the air temperature inside the pit. What the air temperature probe allows you to do is measure the actual temperature inside your pit at the exact location of your food. Most pellet grills will tell you the temperature inside your pit, but the built-in probe is never at the same level as the cooking surface, so the temperature difference could be significant.
I used one channel to monitor the temperature in the point of the brisket and another channel to monitor the temperature in the flat of the brisket. These are two separate muscles that cook differently so it’s important to be able to keep track of both. As I mentioned, I also used another channel to monitor the air temperature at the cooking surface. As you can see in the app screenshots, it’s simple to keep track of all three channels at once so I was well informed and knew exactly when I needed to take the brisket off of the grill to wrap.
While the battery life of the Signals is advertised as 16 hours of continuous use, I noticed that I started getting low battery warnings after around 10 hours of smoking, which was surprising. Unless this was an anomaly, this is something that concerns me because if you’re doing a long cook, you want to trust your thermometer to go the distance and not run out of juice before you’re done. However, being that Thermoworks has a reputation for high-quality equipment, if you’re having issues with your battery, I would expect them to make it right.
Battery concerns notwithstanding, I would recommend the Thermoworks Signals to any pitmaster who wants to make sure they have an accurate temperature reading that they can access from anywhere they have internet access. Great for overnight cooks or times where you’ve got better things to do than sit in front of your grill, the Thermoworks Signals should be your go-to thermometer. It comes in a number of colors to suit any taste; including white, yellow, green, red, blue, orange, pink, purple, and black.
You can purchase your Thermoworks Signals directly from the source at Thermoworks.com.
Source: Manufacturer supplied review sample. Note: Affiliate links have been used throughout this review.
What I Like: Simple to use; Bluetooth & Wi-Fi connectivity; Four channels; Waterproof; Smart alerts; Accurate readings.
What Needs Improvement: App user interface could use some polish; Battery life could be an issue.