• RPM-Activated Switch performs variety of functions from turning on bulb or solenoid to activating Timing Control at a desired rpm
• 2 activation wires - 1 to ground a circuit & the other to open a circuit
• Plug in an rpm module & wire Switch to the circuit you want to activate
• Activates circuit when rpm reaches set amount & remains on until rpm falls below set amount
• Can be used with stock inductive ignitions or an MSD Ignition
• Can handle up to 1.5 amps
• No rpm modules are supplied