Garmin O2421 Low Power Transmitter (2400-2483.5 MHz) User Manual

Garmin International Inc Low Power Transmitter (2400-2483.5 MHz)

Contents

USERS MANUAL 1 OF 2

)(&1$and )(&1$Instructions WARNINGSee the Important Safety and ProductInformation guide in the product box forproduct warnings and other importantinformation.Installing the 'HYLFHNOTE: If you do not have this GHYLFH, you canskip this task.TIP: Garmin® recommends you secure yourSURGXFW while installing the GHYLFH.1Place and hold the GHYLFH on top ofthe SURGXFW.2Pull the strap À around,and attach it to the hook Á on the GHYLFH.The GHYLFH may be tilted when installed onan asymmetrical DVVHPEO\. This does not affectoperation.3Rotate the SURGXFW to check for clearance.2
The GHYLFH should not contact other partsof your SURGXFW.NOTE: The LED flashes green for fiveseconds to indicate activity after tworevolutions.Installing the 'HYLFHNOTE: If you do not have this GHYLFH, you canskip this task.TIP: Garmin recommends you secure yourSURGXFW while installing the GHYLFH.1Select the band size that fits your SURGXFWsecurely.The band you select should be thesmallest one that stretches across theSURGXFW.2On the non-drive side, place and hold theflat side of the GHYLFH on theinside of the SURGXFW.3Pull the bands À around the SURGXFW,and attach them to the hooks Á on theGHYLFH.4Rotate the SURGXFW to check forclearance.The GHYLFH should not contact the other parts of your SURGXFW, or you.3
NOTE: The LED flashes green for fiveseconds to indicate activity after tworevolutions.Pairing the Sensors with YourDevicePairing is the process of connecting an ANT+™wireless sensor, with a Garmin ANT+compatible device.NOTE: The pairing instructions differ for eachGarmin compatible device. See your owner'smanual.• Bring the Garmin compatible device within3 m of the ANT+ sensor.• Stay 10 m away from other ANT+ sensorswhile pairing.After you pair the first time, your Garmincompatible device automatically recognizesthe ANT+ sensor each time it is activated.Batteries WARNINGDo not use a sharp object to remove user-replaceable batteries.Contact your local waste disposal departmentto properly recycle the batteries. PerchlorateMaterial – special handling may apply. Go to www.dtsc.ca.gov/hazardouswaste/perchlorate.4
Replacing the BatteryThe LED flashes red to indicate a low batterylevel after two revolutions.1Locate the circular battery cover À on theback of the sensor.2Twist the cover counter-clockwise until themarker points to unlocked and the cover isloose enough to remove.3Remove the cover and the battery Á.4Wait 30 seconds.5Insert the new battery with the positiveside facing up.NOTE: Do not damage or lose the O-ringgasket.6Twist the cover clockwise until the markerpoints to locked.NOTE: The LED flashes red and green fora few seconds after battery replacement.When the LED flashes green and thenstops flashing, the device is active andready to send data.5
SpecificationsBattery type User-replaceableCR2032, 3 voltsBattery life Approximately 12 months(1 hour per day)Water resistance 32.9 ft. (10 m )OperatingtemperaturerangeFrom -4º to 140ºF (from-20º to 60ºC)Radio frequency/protocol2.4 GHz ANT+ wirelesscommunications protocolLimited WarrantyThe Garmin standard limited warranty appliesto this accessory. For more information, go to www.garmin.com/support/warranty.html.6

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