Description
Tecmark Latching Air Switch - 16A up to 250V | NC & NO. Most applications use the Normally-Open pins (top & middle). Older white ones broke at the connection after several years. Replaces TinyTrol, Pres-Air-Trol, Tecmark and others.
Fits many Astralpool & Hurlcon Air Switch boxes, Blowers, Davey Pumps, Edgetec Pumps, Onga & Balboa bath pumps, Hurlcon Timer Boxes and other pool equipment. USA-made. Not a cheap Chinese switch.
When retrofitting another type of air switch, will require a ~14mm hole.
Note the first image is the style that supersedes all others. Cannot be activated by lung pressure. Requires a good quality air button and air line.
Replaces TBS301A, TBS301A, TBS-301, TBS-305, hq34-0002, PresAirTrol TVA 411E and many many others for up to 25A @ 240V. 100,000 cycle life.




