I have a wireless pump control system- transmitter, receiver. It all works, but the receiver does not have a voltage output by design to power a pump starter contactor ,which are usually a 24 vac, or 120 vac coil . It is open / close only, no voltage. I have the starter contactor suggested, but am unable to wire it to operate from the receiver. The receiver is operating, the output is closed when the transmitter transmits , so the receiver is operating . What would the connections be for this system to operate? your expertise is much appreciated. .Here are the supplied images:

Receiver-
Wireless Receiver Diagram.jpg
Pump Contactor 120 vac coil -
Contactor schemetic.jpg