This basic configuration consists of the main unit that is the temperature and calendar clock station, and the thermohygrometer sensor remote unit. The main unit can support up to 3 remote sensors. Additional remote sensors are available. The main unit has a large easy-read LCD screen that displays the indoor temperature, clock with calendar, and temperature and humidity data transmitted by the remote sensor to the main unit. The RMR-136HG also records the maximum and minimum indoor temperatures, and the maximum and minimum temperatures/humidity data transmitted from the remote sensor. The clock is a radio-controlled ExactSet clock and includes a calendar. The clock automatically synchronizes time and date with radio signals received from the US Atomic Clock, one of the world's most accurate timepieces. Other clock/calendar features include three-language choice for day-of-the-week display, a four-step crescendo alarm and easy-change display modes. (To learn more about the US Atomic Clock visit the US Department of Commerce's National Institute of Standards and Technology website at: www. ) 1 TM AM M D H G F EXACTSET RADIO CONTROLLED CHANNEL MEMORY SET / MODE DAILY Model No. RMR136HG O P Q R S GB GB A. THREE-LINE LCD DISPLAY Easy-read LCD display of remote sensor and indoor temperature-humidity data and calendar clock functions B. [ ] BATTERY-LOW ICON Indicates that the remote sensor or main unit battery power is low and that batteries need replacement C...