Air Switch / Pneumatic Switch. Connects to 3mm air line to operate many types of spa pumps.
This is a SPDT single pole double throw switch. There are 3 quick connect terminals.
Power: 250vac 16amp resistive (i.e.. Heater) and 4amp inductive (i.e.. Pump).
Hole size required : 15mm.
Air Tube Size required: 3mm.