Gordon, delGato

Yes, it will include a door sequencer. It is under development for a large (120") F-4 E/F Phantom (and partially an Avonds F-15), on which part of the gear doors remain open and others close. So both functions will be supported. It will, however, not be controlled with a time delay as most sequencers do, but it will work with a position sensor. As soon as the locked-position of the gear cylinder is reached (either up or down), the doors will cycle. That way the door will not run into the gear in case it cycles slower on an occasion (for whatever reason).
The gear itself will be actuated by a cylinder just like the real thing.
Weight of the running prototype is around 150grams, about 5 oz....weight is depending on maximum travel and required power, but with the 150 there should be plenty of power for most uses, including airbrake actuation. Radio glitches have not been noticed.....but we will do extensive range testing before sending one up.

Once finished it will be a foolproof "plug and play" unit, but there is still some development to be done.
We have not considered selling it commercially, but might consider getting something like that on the way if there is enough demand...

Best regards
Hank

PS DelGato: refilling is not the main reason for me to go away from pneumatics...the main reason is reliability. An electric motor will turn when power is provided. Air can always spring a leak, and i've already had a few belly landings because of pressure loss, or a SpringAir not locking down properly (usually nosegear collapse)....electric is worry-free when charged, and you can always add an "emergency extension" via ECU power....