Feature:1. MAIN PURPOSE: Voltage to frequency module, the voltage frequency pulse signal can generate different frequency according to the input level.2. 010V TO 01KHZ: Frequency analog voltage signal module can convert 010V voltage into 010KHz frequency pulse signal.3. EASY OPERATION: Wide range of input controllable voltage and frequency, can be input directly without series resistance.4. SIMPLE WIRING: The signal conversion module has clear wiring 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 ModuleWorking Voltage: 13.5V-30VInput Controllable Voltage Range: 0-10VOutput Frequency Range: 0-10KHzSize: Approx. 33 x 34mm / 1.3 x 1.34inWiring Instructions: VCC: Working powerGND: Power groundF: Input frequency pulse signalVOUT: Output corresponding voltageGND: Output groundIndication: The frequency pulse signal is connected to F, and there is a corresponding voltage output at the VOUT end.Input and Output Correspond: 100Hz=1V1KHz=10V.Package List:1 x Voltage to Frequency ModuleNote:If there is correspondence deviation in the during use, you can adjust the potentiometer on the board for calibration.