Gently lift the tab on the battery compartment door. Insert four UM-3 or "AA" size alkaline batteries. Installation: 1. Remove the screws on the battery compartment. Select the desired temperature scale by switching the °C/°F switch located inside the battery compartment. Select the channel number on the CHANNEL slide switch. Note that once a channel is assigned to a remote unit, you can only change it by removing the batteries or resetting the unit. Insert the batteries strictly according to the polarities shown inside the battery compartment. Replace the battery compartment door and secure the screws. Note: Disposed of improperly, batteries can be harmful. Protect the environment by taking exhausted batteries to authorized disposal stations. Replace the battery compartment door. Note: For both the remote sensor and the main unit, replace batteries when they are low. The low battery indicator [ ] in the indoor or / and outdoor temperature window will be displayed when the batteries are low. HOW TO READ THE KINETIC WAVE DISPLAY The kinetic wave display shows the signal receiving status of the main unit. There are three possible forms: The unit is in searching mode. Channel registered in search mode. No signal received in search mode. 4 MAXIMUM AND MINIMUM TEMPERATURES The maximum and minimum recorded temperatures will be automatically stored in memory. To display them, press MEM. Press MEM again to alternate between the maximum, minimum, and current temperatures. The respective MAX or MIN indicator will be displayed. To clear the memory, press MEM button and hold for three seconds. The maximum and minimum-recorded temperatures will be erased. Subsequently, if you press MEM after the memory has been erased, the maximum and minimum temperature will have the same values as the current reading...