Mr Steam Temperature Probe For iSteam, AirTempo, iTempo, and iTempoPlus ControlsDescription If desired to have your steam control placed outside of the steam room, a Temperature Probe will be required. The probe is installed in the steam room and connects via a cable directly to the steam generator PC Board. MrSteam Temperature Probes are available in 30 ft or 60 ft cable lengths and work with the iSteamX, AirTempo, iTempo, and iTempoPlus steam controls. Technical Specifications The Temperature Probe needed if steam control is