The 2-probe kit can be used to compare internal cabin vent temperatures across multiple vents or from vents and outside temperature. Kit contains two Robinair temp probes. Works with new Robinair Connected ACS machines 34998 or AC1234-9.80212 Bluetooth temperature probes also work with Robinair 34288NI, 34788NI, 34788NI-H, 34988NI and AC1234-4 ACS if the machine has the Wi-Fi/Bluetooth dongle already installed (software update may also be required).
eBay