
Milan, Italy MIL 1 SE
Montevideo, Uruguay MVD -3 SM
Moscow, Russia MOW 3 SK
Munich, ermany MUC 1 SE
Nairobi, Kenya NBO 3 NO
Nanjing (Nanking), China NK 8 NO
Naples, Italy NAP 1 SE
New Delhi, India DEL 5.5 NO
Odessa, Ukraine ODS 2 SE
Osaka, Japan KIX 9 NO
Singapore, Singapore SIN 8 NO
Sofia, Bulgaria SOF 2 SE
Stockholm Arlanda, Sweden ARN 1 SE
Sydney, Australia SYD 10 SA
Tokyo, Japan TKO 9 NO
Tripoli, Libya TRP 2 NO
Vienna, Austria VIE 1 SE
Warsaw, Poland WAW 1 SE
Zürich, Switzerland ZRH 1 SEA
WORLD CITIES
City Code Zone DST City Code Zone DST
Offset Offset
Addis Ababa, Ethiopia ADD 3 NO Cairo, Egypt CAI 2 sg
Adelaide, Australia ADL 9.5 SA Calcutta, India
(as Kolkata)
CCU 5.5 NO
Algiers, Algeria AL 1 NO Cape Town, South Africa CPT 2 NO
Amsterdam, Netherlands AMS 1 SE Caracas, Venezuela CCS -4 NO
Ankara, Turkey AKR 2 SE Chihuahua, Mexico CUU -6 SU
Asunción, Paraguay ASU -3 sp Copenhagen, Denmark CPH 1 SE
Athens, reece ATH 2 SE Córdoba, Argentina COR -3 NO
Bangkok, Thailand BKK 7 NO Dakar, Senegal DKR 0 NO
Barcelona, Spain BCN 1 SE Dublin, Ireland DUB 0 SE
Beijing, China BEJ 8 NO Durban, South Africa DUR 2 NO
Belgrade, Yugoslavia BE 1 SE Frankfurt, ermany FRA 1 SE
Berlin, ermany BER 1 SE lasgow, Scotland LA 0 SE
Birmingham, England BHX 0 SE uatemala City, uatemala UA -6 NO
Bogotá, Colombia BO -5 NO Hamburg, ermany HAM 1 SE
Bordeaux, France BOD 1 SE Havana, Cuba HAV -5 SH
Bremen, ermany BRE 1 SE Helsinki, Finland HEL 2 SE
Brisbane, Australia BNE 10 NO Hong Kong, China HK 8 NO
Brussels, Belgium BRU 1 SE Irkutsk, Russia IKT 8 SK
Bucharest, Romania BBU 2 SE Jakarta, Indonesia JKT 7 NO
Budapest, Hungary BUD 1 SE Johannesburg, South Africa JNB 2 NO
Buenos Aires, Argentina BUA -3 NO Kingston, Jamaica KIN -5 NO
Kinshasa, Congo FIH 1 NO Oslo, Norway OSL 1 SE
Kuala Lumpur, Malaysia KUL 8 NO Panama City, Panama PTY -5 NO
La Paz, Bolivia LPB -4 NO Paris, France PAR 1 SE
Lima, Peru LIM -5 NO Perth, Australia PER 8 NO
Lisbon, Portugal LIS 0 SE Prague, Czech Republic PR 1 SE
Liverpool, England LPL 0 SE Rangoon, Myanmar R N 6.5 NO
London, England LON 0 SE Reykjavík, Iceland RKV 0 NO
Lyon, France LYO 1 SE Rio de Janeiro, Brazil RIO -3 sb
Madrid, Spain MAD 1 SE Rome, Italy ROM 1 SE
Manila, Philippines MNL 8 NO Salvador, Brazil SSA -3 NO
Marseille, France MRS 1 SE Santiago, Chile SCL -4 sc
Melbourne, Australia MEL 10 SA São Paulo, Brazil SPL -3 sb
Mexico City, Mexico MEX -6 SU Shanghai, China SHA 8 NO
DST (DAYLIGHT SAVINGS TIME) DEFINITIONS:
SA = Australian DST.
SB = South Brazilian DST. Changes annually.
SC = Chile DST
SE = Standard European DST.
S = Egypt DST
SH = Havana, Cuba DST
SI = Iraq and Syria DST
SK = Irkutsk & Moscow DST
SM = Montevideo, Uruguay DST
SPECIFICATIONS
Radio Frequency: 433 MHz
RF Reception range: 100-328 feet (30 -100 m)
Barometric Pressure
Measuring Range: 14.75 inHg to 32.44 inHg (500 Hpa to 1100Hpa); (374.5 mmHg to 823.8 mmHg)
Resolution: 0.003 inHg (0.1 Hpa, 0.08 mmHg)
Accuracy: 0.015 inHg (5 Hpa; 0.38 mmHg)
Sampling interval: 20 minutes
Altitude Compensation Range: -657 ft to 16404 ft (-200m to +5000 m)
Temperature (Indoor)
Operating Range: 14.2° to 140°F (-9.9° to 60°C)
Resolution: 0.2°F (0.1°C)
Accuracy: 2°F (1°C)
Sampling Interval: 10 seconds
Humidity (Indoor)
Operating Range: 0% to 99%
Resolution: 1%
Accuracy: 5%
Sampling Interval: 10 seconds
Wind Direction
Range: 0° to 360°
Resolution: 22.5°
Accuracy: 11.25°
Starting Threshold: 3mph (4.8 Km/h)
Transmitting interval: 33 seconds
Rainfall
1h/24h/yesterday range: 0 to 78.73 inch
(0 to 1999.9 mm)
Last week/ last month range: 0 to 787.3 inch
(0 to 19999 mm)
Resolution: 0.03 inch (0.6578 mm)
Accuracy: +/- 5% +/- 0.03 inch
(+/-5%mm +/-0.6875)
Transmitting Interval: 183 seconds
Battery life (alkaline)
Main unit: 2 month
Thermo-Hygrometer: over 12 months
Anemometer: 2 years
Rain auge: 2 years
Dimensions
Main unit: 7.31 (L) x 5.39 (H) x 1.26 (D) inches / 185.8 (L) x 136.9 (H) x 32 (D) mm
Remote Thermo - Hygrometer: 2.37 (L) x 4 (H) x 1 (D) inches / 60 (L) x 101 (H) x 25 (D) mm
Remote Anemometer: 19.16 (L) x 19.16 (H) x 15.35 (D) inches / 486.6 (L) x 486.6 (H) x 390 (D)mm
Remote Rain gauge: 6.49 (L) x 6.89 (H) x 4.72 (D) inches / 165 (L) x 175 (H) x 119 (D)mm
FCC STATEMENT
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) This device must accept any
interference received, including interference that may cause undesired operation.
Warning: Changes or modification to this unit not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTE:This equipment had been tested and found to comply with the limits for a Class B Digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment, installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
There is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to improve or correct turning the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio / TV technician for help.
8
SN = Namibia DST
SP = Paraguay DST
SQ = Iran DST maybe changed annually.
ST = Tasmania DST
SU = Standard American DST.
SZ = New Zealand DST
NO DST = no = Places that do not observe DST;
ON = Always add 1 hour to the local standard time
Temperature (remote)
Range: -40° to 176°F (-40° to 80°C)
Resolution: 0.2°F (0.1°C)
Accuracy: 2°F (1°C)
Transmitting Interval: around 47 seconds
Humidity (Outdoor)
Operating Range: 0% to 99%
Resolution: 1%
Accuracy: 5%
Sampling Interval: 10 seconds
Transmitting Interval: around 47 seconds
Wind Speed
Range: 0 to 199.9mph
(199.9 Km/h, 173.7 Knots, 89.3 m/s)
Resolution: 0.1mph (0.16 Km/h)
Accuracy: (2mph + 5%)
Starting Threshold: 3mph (4.8 Km/h)
Wind/ ust Speed Display Update Interval:
33 seconds
Wind/ ust Sampling Interval: 11 seconds
Power
Main unit: 4 x UM-3 or “AA” batteries;
7.5V AC/DC power adaptor
(200mA; center pin positive)
Remote Thermo Hygrometer:
2 x UM-3 or “AA” batteries
Remote Anemometer: 2 x UM-3 or “AA” batteries
Remote Rain auge: 2 x UM-3 or “AA” batteries
Weight (without batteries)
Main unit: 8.15oz (231g)
Remote Thermo-Hygrometer: 2.29oz (65g)
Remote Anemometer: 11.12oz (315g)
Remote Rain gauge: 10.24oz (290g)
GENERAL TOOL & IN TRUMENT ™
80 White treet, New York,NY10013-3567
PHONE (212) 431-6100 FAX (212) 431-6499
TOLL FREE (800) 697-8665
www.generaltools.com
WS821 User’s Manual
Specifications subject to c ange wit out notice
©2009 GENERAL TOOLS & INSTRUMENTS™
NOTICE - WE ARE NOT RESPONSIBLE FOR TYPO RAPHICAL ERRORS.
MAN#WS821 3/09