Eq 3 max wireless radiator thermostat system eq 3 99023a0b the eq 3 max window contact signals the cube lan gateway when windows or doors are opened and closed as part of the max system it thus ensures that max radiator thermostats automatically reduce the temperature when a window or door is open to save energy and increase it again when the window or door is closed the reduction temperature can be set separately for each room with the max softwarethe max window contact is powere