Ambient Weather WS-15-X3 Wireless 8-Channel Thermometer with Plastic Probe Thermometer with Three Remote Sensors Simple to read, simple to use, and affordable, the WS-16 includes an indoor thermometer in the console and can remotely read and update up to eight remote sensors from the compact display. The WS-15-X3 includes three remotes, and five additional sensors can be added (F007T air temperature, F007TP temperature probe and F007PF pool float) for comprehensive monitoring. Each remote sensor includes dip switches for 8-channel selection and units of measure (degF vs degC). The sensor search mode allows you to re-sync sensors without removing and re-inserting batteries. Optional calibration is provided for the utmost accuracy.