The PWM-1 is a simple to use device that converts a pulsed signal into a voltage. The device will output a modulated voltage proportional to the pulse duration. Precision of the output voltage is up to one-tenth of a volt.This device can be equipped with a RS-485 serial communication line using Modbus protocol. It has a manual over-ride switch option that allows the voltage output to be adjusted by potentiometers. It is also equipped with a self-programmable chip which allows the unit’s firmware to be updated at any time.