The CRA913 Accessory is designed to be used in conjunction with the ARA and CR* range of controllers and actuators.
A small circuit board is included as part of this accessory, which features a microswitch that can be activated by setting the factory-fitted cam position with the ARA or CR* Controller; also included are a connector block and an enclosure with a cable.
This accessory allows the activation of a third-party fixed-speed circulator dependent on valve position.