I’m trying to remote control a linear actuator that opens a window. A small remote receiver like the VM130 looks close to what I want but not quite. I need two double throw relays to reverse polarity to the actuator and allow me to open and close the window. The problem is if I bridge the remote switch so the relays operate in unison the window will close if the button press is momentary on and releasing the button deenergises the relays and reverses the polarity to the motor. laureanno.com/drape-controls.jpg is a schematic of what I want to acheive. The limit switches are built into the actuator so I just need to be able to latch normally open or latch normally closed with each button press. Is this possible with the VM130 or do I need a different product?
VM130 features a latching mode with timer for each channel.
You will need to configure the times so that the channel turns off a little after the actuator has reached a limit.
An idea of a schematic diagram has been mailed to your address.
Thanks for your help. Time latching the relays in one orientation to hit the internal limit switch sounds ok.
Looking at the diagram CH2 N/C and CH1 N/O will give power to close CH1 N/O and CH2 N/C will give power to open. Then power off will mean both relays in the same orientation giving no power to the actuator. It’s late and I’m tired. 
That should allow me to have one button open one button close.
You only need to configure both relays as toggle with timer.
Press left button to open, press right button to close (or vice versa, depending on wiring).