This timer connects to the stock power harness of an 115vac MEI Mars series 2000 amusement validators.  The recommended models are AE24x1, AE26x1, and AE28x1. 

When setting the option switches on the validator set to one pulse per dollar, always enable, and gaming interface - varies by model of validator.

The standard configuration of the timer kit includes a common / normally open relay that energizes to provide a circuit that is rated at up to 5 amps at 120v.