La Crosse WS-8300U-IT Wireless In/Out Temp w/Digital Clock Wireless outdoor temperature (F or C) ; Wireless outdoor humidity (%RH) Monitors indoor temperature (F or C) ; Records MIN/MAX temperature and humidity Can receive up to 3 sensors ; Time display (manual setting) 12/24 hour time display ;Wall hanging or free standing Receiver: 5.48 " x 5.79 " x .93 " ; Sensor: 5.34 " x 2.26 " x 2.44 "