Hoping to upgrade this or similar telescopic door kick-down stopper to release the stopper remotely. Wondering if there are standard solutions that would allow for electrical and manual loaded spring release on such telescopic kick-down door stopper using stepper motor or some other means (with kick release is preserved).
An electric solenoid that drops the foot when powered and releases whem unpowered seems like the best solution. This could be tied to fire systems to release doors for fire protection. Note that you run the risk here of powering the solenoid when the door is shut, and you need a solution (manual circuit break) to allow egress in a fire.
Electro-magnets that hold open doors to stairwells is a similar application.