QAU775 - Quad Alarm

Product Diagram

The QAU775 is a single input four relay output, and features:

  • Signal inputs including AC & DC current/voltage, pulse, potentiometer, temperature, chemical sensors and strain-gauge.
  • Option for special functions: Min/Max selector or Adder/Subtractor of two 4-20mA signals.
  • Contacts rated at 10A/250Vac resistive.
  • Option for open collector outputs.
  • Front setpoint and deadband adjustments.
  • Sensor excitation.
  • Retransmission available as common process signals.
  • Window alarm option.
  • Reverse action by internal link headers.
  • Trip status is indicated by LED.
  • Wide swing AC/DC power supplies.

Common applications include:

  • Multiple trippoint process alarm.
  • Process heating alarm.



Most drawings are supplied in PDF format. Portable Document Format is used to present documents in a manner independent of application software, hardware, and operating systems.


Lead Time for a Traditional Product


Traditional products usually contain the same functionally as standard and premier products but have a different connection, part number or specifications. Traditional products are still available as a service to our customers that have them specified in their plants. Delivery is typically 7 days.

Alternate Products




Order Processing


APCS makes and customises products according to a customers order. Upon receipt of the customers order the following information is required before manufacture, allocation or deliver until full details are given, these include;

  1. Identity of purchaser. Company name, ABN (Australian companies), street address and accounts email address.
  2. Required delivery address.
  3. Full part number and calibration detail required to manufacture items.
  4. Total on purchase order to include delivery charges. Orders received with missing information will be entered and marked to indicate missing details and returned to the customer for correction or approval.

Compliance with the above ensures that your items are manufactured and delivered according to the required specifications.

Standard delivery times commence after the order has been approved for processing.