Acu-Rite 821 Product Facts, Troubleshooting, Specifications, Measurement Ranges, Wireless Range

TROUBLESHOOTING

Problem	Possible Solution(s)
Low or NO	Relocate the display console and/or the wireless
	sensor. Both units must be within 165 feet (50
Wireless Sensor	meters) from each other. Make sure both units are
Reception	placed at least 3 feet (.91 m) from other electronic
	appliances and devices that may interfere with the
	wireless communication (such as TVʼs, microwaves,
	computers etc).
	NOTE: It may take up to 20 minutes for the display
low reception
	console to re-synchronize with the sensor when
	batteries are replaced.
	Use lithium batteries in sensor when temperature is
	below -4ºF (-20ºC).
NO reception
no bars and flashing
“ - - ” temp/humidity data
Display Unit	Batteries may need replacing.
Screen Not Working	Check that batteries are correctly installed.
	Reset the display unit and wireless sensor.

SPECIFICATIONS

Product Facts

Batteries: 4 x “AA” (not included)

Lithium Batteries Recommended in Outdoor Sensor if temperatures are below -4ºF

Measurement Ranges

Outdoor Temperature : -40ºF to 158ºF

Indoor Temperature : 32ºF to 122ºF

	Indoor Humidity:	20% to 95%
Wireless Range :		165 ft / 50 m MAX

Limited One Year Warranty

www.AcuRite.com

Patent numbers:

5,978,738; 6,076,044; 6,597,990; US 7,637,141 B2

ACURITE® is a registered trademark of

Chaney Instrument Co. Lake Geneva, WI 53147

PLEASE DISPOSE OF OLD OR DEFECTIVE BATTERIES IN AN ENVIRONMENTALLY SAFE WAY AND IN ACCORDANCE WITH YOUR LOCAL LAWS AND REGULATIONS.

BATTERY SAFETY: Clean the battery contacts and also those of the device prior to battery installation. Remove batteries from equipment which is not to be used for an extended period of time. Follow the polarity (+/-) diagram in the battery compartment. Promptly remove dead batteries from the device. Dispose of used batteries properly. Only batteries of the same or equivalent type as recommended are to be used. DO NOT incinerate used batteries. DO NOT dispose of batteries in ￿re, as batteries may explode or leak. DO NOT mix old and new batteries or types of batteries (alkaline/standard). DO NOT use rechargeable batteries. DO NOT recharge

	This weather station has a patented 14-day
	“Learning Mode” calibration process. During this
	Learning Mode the weather station will make
	altitude calculations that may affect the accuracy
Forecast	of the forecast. Once the 14-day Learning Mode
	process is complete, the Learning Mode icon will
Seems	disappear and the weather forecast is ready for
Inaccurate	superior operation.
	Make sure the wireless outdoor sensor is placed
	outdoors and is placed in a location that will most
	accurately report the outside temperature
	conditions, these readings directly affect the
	forecast feature.

www.AcuRite.com	(877) 221-1252
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IMPORTANT NOTICE

YOUR PRODUCT MUST BE REGISTERED TO RECEIVE WARRANTY SERVICE

PRODUCT REGISTRATION Register this product to receive 1-year warranty protection

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