8Installing the Battery[Install the Lithium battery CR123A]ch.1ch. 2● Always put in a new battery.● Be sure that + and - are in the correct directions.● If the unit is being used as a Base Unit or a Relay Unit,please connect the AC adapter as well as install thebattery CR123A to help prevent data loss in the case ofpower failure.[Battery Life]● Even if the Battery Life Warning appears on a Remote Unit, recording will continue.But the unit will not be able to communicate with the Base or a Relay Unit.● If battery power is lost completely, all registration settings will remain, however, ALLDATA WILL BE LOST.● If the Battery Life Warning appears, change the battery as soon as possible.A rough estimate for battery life is 3 months.● Battery life depends on the measurement environment, communication frequency,recording interval and battery quality.[Battery Change Plug]● Please use the Battery Change Plug included in the software set RTR-70 whenchanging the battery.● Do not use the battery change plug with any other Thermo Reorders other thanRTR-71 and RTR-72.[How to Replace Batteries]If the Battery Life Warning appears, change the battery as soon as possible. Whenchanging the battery please use the [Battery Change Plug] included in the software setand follow these directions:① Connect the Battery Change Plug to the unit (see figure 1). Check to see if the( ) indicator is either on or flashing and that the Antenna Indicator ( ) isoff.② Make sure that the COM mark is not flashing.③ Change the battery (see figure 2)NOTE: Use CR123A Battery only.