I have a suction connector with two small lugs that activate the suction with a switch. The key is to position the cutout hose so that it lines up with the connector cutout. If this does not happen, the switch will not work.
Vacuum Cleaner Dyson Cyclone V10 Absolute Global, red/grey
86 Review
Vacuum cleaner Dreame T20 Cordless Vacuum Cleaner Global, grey/red
88 Review
Robot vacuum cleaner Roborock S7 RU, white
143 Review
Robot vacuum cleaner Roborock S7 Global, black
125 Review
Vacuum cleaner Deerma DX118C RU, white/grey
144 Review
Vacuum cleaner Deerma DX700, white
240 Review
Xiaomi Mi Robot Vacuum Cleaner 1S Global Robot Vacuum Cleaner, white
389 Review
Robot vacuum cleaner Roborock S5 MAX Global, black
298 Review