1. Onboard precision miniature voltage transformer
2. On-board high-precision op amp circuit, which performs functions such as accurate sampling and proper compensation of signals.
3. The module can measure AC voltage within 250V, and the corresponding output analog can be adjusted.
4. Sine wave, the middle value (DC component) of the waveform is 1/2VCC.

• Get full control over your project with a massive temperature range, from a freezing -50°C all the way to 110°C.
• No need to buy a separate sensor! A high-quality, waterproof temperature probe is already included in the package.
• Setting it up is very simple; just use the simple '+' and '-' buttons, no coding knowledge needed at all.
• Easily connect and control both your home AC appliances and 12V DC devices like fans, coolers, or pumps.
• Fine-tune your system perfectly with advanced options for heating/cooling modes, timer delays, and safety alarms.
• A proper device for students and DIY makers, perfect for building everything from egg incubators to automatic room coolers.

• The XH-W3001 digital thermostat switch needs a supply voltage of 12V and produces a power of 120W.
• This digital temperature controller is equipped with a 1 metre long stainless waterproof probe that has great resistance against corrosion.
• All the important components of the XH-W3001 digital thermostat are protected in a ABS housing.
• It offers high-temperature control precision of 0.1℃. The temperature control range from -50℃ to 110℃.
• The 12V XH-W3001 temperature controller is best used for heating control in refrigeration and suitable for seafood machines.

• Detects light intensity
• Adjustable sensitivity
• Digital output: 0V to 5V
• LED indicators for power and output
• Stable with LM393 chip
• Easy to install

mmWave-C4001 24Ghz Human Presence Detection Sensor

The DFRobot C4001 24GHz Millimeter-Wave FMCW Radar is the perfect solution for human presence detection. It features long-range measurement, high accuracy, advanced FMCW technology, durable build, easy integration, and strong anti-interference capabilities. Made with robust materials, this radar sensor ensures reliable performance in harsh conditions. Its state-of-the-art FMCW modulation provides superior accuracy, making it ideal for motion detection and proximity sensing. The compact design and versatile installation options simplify setup and enhance project capabilities. The C4001 radar sensor measures up to 25 meters and is suitable for real-time human presence detection. Available in various sizes.