I have a toy that is mounted 4 feet above the floor on which there are 3 pushbutton DSTP switches that I would like to actuate intermittently with my feet. I believe that I can do this by building a device that pairs 3 appropriately positioned solenoids with 3 momentary SPDT footswitches all connected in parallel to an AC/DC adapter with an on/off switch plugged into a wall outlet. I tested the force required to actuate the pushbutton DSTP switches and found it to be 2.15 lbs with a 0.125" stroke. Adding a 50% factor to this I would need a solenoid capable of producing 3.2 Lbs over a 0.187" stroke. I found a low profile medium stroke conical face push or pull solenoid whose rated force at 10% duty cycle for the required stroke is capable of producing 3.6 lbs. Manufacturer specifications organized under the 10% duty cycle column includes 90 Watts, 1690 amper turns, and when choosing a VDC of 10.4 [chosen because it is the closest to 12v DC] it continues 24 AWG, 1.18 resistance, 192 number of turns, and a dielectric strength of 1000 VRMS. My guess is that if I divide the 1690 amper turns by the 192 number of turns that equals 8.8 A. Its physical dimensions are ideal for my application. I have preliminarily chosen a foot switch whose manufacturer specifications include the following: contact form SPDT-NC/NO; current rating 15A; IP rating IP20; operation momentary, voltage rating 250 VAC; UL recognized, CSA certified. I have preliminarily chosen a power supply adapter whose manufacturer specifications approximates the wattage, voltage, and amperage of the above referenced solenoid as follows: voltage input 100 to 240 VAC; output 12 VDC at 8.3 Amps; power output 100 W, over voltage, over current, and short-circuit protection built-in. It also has an 8-pin output cord which has 4 pins assigned to +V1 and 4 pins assigned to Return. My belief is that I would use 3 of these pairs of pins [+V1 and Return] connected independently to each of my 3 solenoid footswitch pairs. I would welcome any engineers opinion regarding my methodology and conclusions. Am I correct in my analysis and selection of the power supply? Will this work?