Function: 1. MAIN PURPOSE: Voltage to frequency module, the voltage frequency pulse signal can generate different frequencies according to the input level. 2. 010V TO 01KHZ: The frequency analog voltage signal module can convert 010V voltage to 010KHz frequency pulse signal. 3. EASY TO USE: Wide range of input controllable voltage and frequency, can be input directly without series resistance. 4. SIMPLE WIRING: The signal conversion module has clear connection terminals, has stable connection and less interference. 5. COMPACT SIZE: The conversion board has a compact size, with mounting holes, easy to install and does not take up space. Specification: Item Type: Voltage to Frequency Module Working Voltage: 13.5V-30V Input Controllable Voltage Range: 0-10V Output Frequency Range: 0-10KHz Size: Approx. 33 x 34mm / 1.3 x 1.34in Wiring Instructions: VCC: Working Current GND: Power Ground F: Input Frequency Pulse Signal VOUT: Output Corresponding Voltage GND: Output Ground Indication: The frequency pulse signal is connected to F, and there is a corresponding voltage output at the VOUT end. Input and Output Correspond: 100Hz=1V, 1KHz=10V. Package List: 1 x Voltage to Frequency Module Note: If there is a correspondence deviation during use, you can adjust the potentiometer on the board for calibration.