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Continue to ChatLight Barrier - SGX4-ENB12 - Common (https://www.camarillahobbies.com/en/en/light-barrier-sgx4-enb12-common)
Light Barrier - SGX4-ENB12 - Common (https://www.camarillahobbies.com/en/en/light-barrier-sgx4-enb12-common)