Features: The function of this module is to control the frequency according to the input voltage. Input 0-10v output 0-10khz square wave, output frequency amplitude is 80% of the input power. The power supply has anti-reverse connection function, safe to use With power indicator light, it is light after power on, convenient for operation The output voltage can be adjusted as needed. The output frequency is adjusted according to the input voltage This one accounts for about 50% of the void ratio ,it will change with the change of frequency. The accuracy of the voltage-to-frequency module is 1%. Specifications: Model: VFS-10V10K Input control voltage range: 0-10V DC Input power voltage:12-30V DC(suggest 15-24vdc) Current :> 30MA Output frequency range: 30hz-10khz by default Installation and fixation:2 *screw holes Size:73*52*27mm / 2.87 x 2.05 x 1.06in Weight: 43g Package includes: 1 x Voltage to Frequency module 1、The function of this module is to control the frequency according to the input voltage. 2、Input 0-10v output 0-10khz square wave, output frequency amplitude is 80% of the input power. 3、The power supply has anti-reverse connection function, safe to use 4、With power indicator light, it is light after power on, convenient for operation 5、The output voltage can be adjusted as needed. The output frequency is adjusted according to the input voltage