|These Trim Relay Boards allow control of an aircraft’s trim motors from the typical switches found in most stick grips. As the switches in the grips are too small to handle the motor loads and usually do not have the required number of poles, the ‘TRB’ offers a simple, elegant solution that is easy to wire and understand. The boards have a per axis rating of 10A at 12 volts, (24V units are also available).|
Nice product, works well, I used two of its relay circuits for 1 older trim system requiring two 12 Volt sources ,1 relay for reverse 1 relay for forward with grounding to the motor case and to the Relay board Ground. Trim motor is from a 1969 Lincoln Continental convertible Top drive motor and trim system is for a homebuilt Smyth Sidewinder. The only issue is that the bottom of the Board is not protected by a plastic or wood insulation, they do warn you with the appropriate placards.