This control box will give a two speed control for a Air Spa air blower.
Controlled from a pneumatic push button .
First press On and low speed.,
Second press high speed.,
Third press off.
( Pneumatic Push Button added extra option)
Automatic cleaning purge. The system will purge for 20 seconds, 20 minutes after the system has been switched off.
The system will automatically switch off, after 20mins continuous use. Press the button again to continue