Acu-Rite 821 Battery Choice & Temperature Range, Display Unit Basic Setup, Remove the battery

SETUP SETUP

Battery Choice & Temperature Range	Display Unit : Basic Setup
Extended periods of cold temperatures ( below -4ºF / -20ºC ) can cause	Press and hold the “SET” button to enter into setup mode. The time will
alkaline batteries to function improperly. This will cause the outdoor
	begin blinking.
sensor to stop transmitting temperature readings. Use lithium batteries in
low temperature conditions to ensure continued operation for wireless	To adjust the currently selected (flashing) preference item, press the
sensors placed outdoors. NOTE: Rechargeable batteries are not
	“ ” or “ ” buttons.
recommended due to higher operating voltages.
	To save your adjustments, press the “SET” button again to move on to
	adjusting the next preference. The preference set order is as follows:
	CLOCK HOUR
	CLOCK MINUTE
Install Batteries - Outdoor Sensor	TEMPERATURE SCALE (ºF or ºC)
	You will automatically exit SET MODE if no entries are changed for 30
Remove the battery	seconds. You may enter basic setup mode again at any time by
compartment cover.	pressing the “SET” button.
Install 2 fresh “AA”
batteries as shown here.	Wireless Signal Reception Icon
BATTERIES MUST BE
INSTALLED FOR THE	The display unit has a wireless signal reception icon near the outdoor
SENSOR TO OPERATE	temperature display area. If there are a low number of “bars” present
	in the icon, you may experience no temperature display ( “- -” ) or
	inaccuracy. In either case, you may need to relocate one or both of the
	units. If most or all 4 of the bars are present, wireless reception is good
Install Batteries - Display Unit	and no action is required.

Remove the battery	SEARCHING	SIGNAL RECEPTION		NO SIGNAL
compartment cover.
	FOR SIGNAL			RECEPTION
Install 3 fresh “AA”
batteries as shown
here.	(animated bars)	LOW	HIGH	(flashing tower)

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