Reflow Master Pro
Reflow Master Pro is the evolution of the original Reflow Master -- with awesome new features and improved usability. It turns a cheap toaster oven into a solder paste reflow oven with a color interface and graphical display of the reflow process.
Reflow Master Pro has an easy-to-use interface with beautiful reflow graphs. It comes with five built-in solder paste profiles, and a built-in webserver for adding, editing, and removing profiles, with a graphical view of how the profile will look.
How It Works
Reflow Master Pro connects to your toaster oven via a Solid State Relay (SSR), controlling the heating elements to follow a solder paste reflow temperature profile. Dual K-type thermocouples inside the oven feed real-time temperature data back to the controller, which adjusts the heating cycle to match your selected profile.
Reflow Master Pro is designed to work with any toaster oven -- no algorithm tuning required. That said, if you really want to tweak, you can switch from the classic Reflow Master algorithm to PID control and tune your settings to exactly how you like.
Reflow & Bake Modes
Reflow Master Pro supports both Reflow Mode for solder paste reflow and Bake Mode for general heating tasks. Profiles for both modes can be managed via the built-in webserver.
WiFi Web Interface
Reflow Master Pro is WiFi enabled. Once WiFi is set up, you have access to a browser interface to add, edit, and remove reflow paste profiles and bake profiles, as well as alter all of the settings via the built-in web server. MQTT publishing is also supported, along with runtime PID and Classic mode tuning.
Firmware Updates
Firmware updates are performed via a web flashing tool -- no need to compile any code, install a development environment, or install any other tools. Put your RMP into "flash firmware" mode via the settings menu, plug it into your computer, and click "update firmware" on the webpage.
What Do You Need?
Reflow Master Pro ships fully assembled and tested, and includes 2x K-Type thermocouples and an external antenna. You will need to provide:
- Solid State Relay (SSR) (3V+ DC to 100/240V AC)
- USB-C cable and power source (5V DC)
For more information, please visit the Reflow Master Pro product page.
Hardware Specifications
- ESP32-S2FN4R2 micro-controller
- 2.4GHz WiFi -- 802.11b/g/n
- USB-C Connector (Power/Flashing)
- 5V DC Barrel Jack (Alternative Power)
- External High Gain Antenna
Features
- 2.4" Colour TFT Display
- 2x MAX31855 K-Type Sensor ICs
- 4 Button Navigation Control
- Power Button (press on, hold for off)
- Magnetic Buzzer
- 2x Auxiliary Outputs (fans/devices)
- E-Kill Switch Terminals
- STEMMA/QT I2C Connector
- 5.08mm Screw Terminals
Updated on: February 8, 2026