The Pro Relay Laundry System can pump 1-6 products in response to a trigger signal. Each Pump responds and runs as long as a trigger is present. This dispenser is intended for Microprocessor controlled laundry machines where you can control the pump run time through the signal length. The trigger inputs are isolated from each other, but can be jumped together if necessary. Input trigger signal conditioning is provided. The unit will accept triggers of 24-240 volts AC or DC, and is powered with a standard 120 volt outlet.