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    <link:label id="lab_us-gaap_SalesRevenueNet_E595DA26EE7C91A9949DF42396CE4495_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNet_E595DA26EE7C91A9949DF42396CE4495" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_E595DA26EE7C91A9949DF42396CE4495" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNet_E595DA26EE7C91A9949DF42396CE4495" xlink:to="lab_us-gaap_SalesRevenueNet_E595DA26EE7C91A9949DF42396CE4495" xlink:type="arc" />
    <link:label id="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57_terseLabel_en-US" xlink:label="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Movement in Standard Product Warranty Accrual</link:label>
    <link:label id="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57_label_en-US" xlink:label="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Movement in Standard Product Warranty Accrual [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MovementInStandardProductWarrantyAccrualRollForward" xlink:label="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57" xlink:to="lab_us-gaap_MovementInStandardProductWarrantyAccrualRollForward_3C4BDEDBF0F3A3EB5636266FAE1B9A57" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411_periodStartLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning of year</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411" xlink:to="lab_us-gaap_ProductWarrantyAccrual_548CB8528ED4C7459039266FAE1BF411" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accruals/additions</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual, Warranties Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3" xlink:to="lab_us-gaap_ProductWarrantyAccrualWarrantiesIssued_C97B71BCD651F4C18A51266FAE1B37B3" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Usage</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual, Payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProductWarrantyAccrualPayments" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2" xlink:to="lab_us-gaap_ProductWarrantyAccrualPayments_ECC976B4529A7DD50EDC266FAE1CC9C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProductWarrantyAccrual_82C41D8590C543A4A9DF266FAE1CA327_periodEndLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrual_82C41D8590C543A4A9DF266FAE1CA327" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProductWarrantyAccrual" xlink:label="loc_us-gaap_ProductWarrantyAccrual_82C41D8590C543A4A9DF266FAE1CA327" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrual_82C41D8590C543A4A9DF266FAE1CA327" xlink:to="lab_us-gaap_ProductWarrantyAccrual_82C41D8590C543A4A9DF266FAE1CA327" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsAbstract_FAAA08C782DE5067A880550122FE4481_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsAbstract_FAAA08C782DE5067A880550122FE4481" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combinations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_FAAA08C782DE5067A880550122FE4481" xlink:type="locator" />
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    <link:label id="lab_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6_periodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6" xlink:to="lab_us-gaap_GoodwillRollForward_33083F0EB2CD611F673F5501230AC6E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6_periodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning goodwill, gross</link:label>
    <link:label id="lab_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6_label_en-US" xlink:label="lab_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6" xlink:to="lab_us-gaap_GoodwillGross_B21DF59CABED3F0C9D9F550D9C4092E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1_periodStartLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning acculumlated impairment losses</link:label>
    <link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Impaired, Accumulated Impairment Loss</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_A9DEE08DF6705E56E1D2550CD79A3DC1" xlink:type="arc" />
    <link:label id="lab_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF_periodStartLabel_en-US" xlink:label="lab_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning of the year</link:label>
    <link:label id="lab_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF_label_en-US" xlink:label="lab_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF" xlink:to="lab_us-gaap_Goodwill_9D0B37E781C5765B83245501230C99DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill acquired during the year</link:label>
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114_label_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Acquired During Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114" xlink:to="lab_us-gaap_GoodwillAcquiredDuringPeriod_586F2554E344750252205501230D8114" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillGross_1E005577613D8F1B610C550FDC6F8AEA_periodEndLabel_en-US" xlink:label="lab_us-gaap_GoodwillGross_1E005577613D8F1B610C550FDC6F8AEA" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending goodwill, gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillGross" xlink:label="loc_us-gaap_GoodwillGross_1E005577613D8F1B610C550FDC6F8AEA" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_527AF3D1029CC4D8290B55102AB6B796" xlink:type="locator" />
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    <link:label id="lab_us-gaap_Goodwill_F11BD0C73867C36DC7445501230D1157_periodEndLabel_en-US" xlink:label="lab_us-gaap_Goodwill_F11BD0C73867C36DC7445501230D1157" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at end of year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_F11BD0C73867C36DC7445501230D1157" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RisksAndUncertaintiesAbstract_1D68D195B08022315B31D05F1CAF584B_label_en-US" xlink:label="lab_us-gaap_RisksAndUncertaintiesAbstract_1D68D195B08022315B31D05F1CAF584B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Risks and Uncertainties [Abstract]</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3CAC888A64D0D67E2FEA27A5322033B8_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3CAC888A64D0D67E2FEA27A5322033B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_D5CF96835A00AB0736C827A532201C1B_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_D5CF96835A00AB0736C827A532201C1B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_6AADC6A21C65A4BDBEF43B29032CAE12_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_6AADC6A21C65A4BDBEF43B29032CAE12" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2013</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_A7E1E91F57591BD818A53B29032C90F2_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_A7E1E91F57591BD818A53B29032C90F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2014</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_A7E1E91F57591BD818A53B29032C90F2" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F3492E3B24A87CFA6D043B29032CF437_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F3492E3B24A87CFA6D043B29032CF437" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2015</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F3492E3B24A87CFA6D043B29032CF437" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E6BA1FFFB19CF47EE34C3B29032C9CE1_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E6BA1FFFB19CF47EE34C3B29032C9CE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_E6BA1FFFB19CF47EE34C3B29032C9CE1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_8EB17FB813A4EBCEA61C3B29032C9FAE_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_8EB17FB813A4EBCEA61C3B29032C9FAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
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    <link:label id="lab_clro_EquityIncentivePlan2007Member_A39243F5B6E2D37BF2D53CB66C5D9332_terseLabel_en-US" xlink:label="lab_clro_EquityIncentivePlan2007Member_A39243F5B6E2D37BF2D53CB66C5D9332" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Incentive Plan, 2007</link:label>
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