TrolMaster Fan Speed Controller VFD-1

VFD fan speed control for Hydro-X Pro（VFD-1） VFD-1 Variable Frequency Drive is specifically designed to control Inverters including TECO E510, DELTA ME300, ABB ACS355 (with an FMBA-01 module) etc. with the Hydro-X Pro controller for the purpose of controlling and adjusting the speed of industrial fans in your application. There is no need to provide power supply for the VFD-1 unit. It can be connected to the Hydro-X Pro with a simple RJ12 phone cable. *Firmware Update Note: To update firmware on the TrolMaster's controllers and modules, you must use a Micro SD card that is 32GB or less capacity.