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Orange County Deaf Advocacy Center a 501c3 nonprofit charity is becoming the Sensory Impaired Guidance Network Welcome to the Sensory Impaired Guidance Network SIGN. The Sensory Impaired Guidance Network SIGN formerly known as the Orange County Deaf Advocacy Center is a beacon of hope and innovation for those experiencing hearing vision and sensory processing challenges. As a dedicated 501c3 nonprofit charity were committed to dismantling barriers and enhancing access to tailored solutions that enable health safety and productivity. SIGN Club SIGN Enrichment SIGN Shop Blog Donate All funds raised from tuition fees and donations go back to supporting programs and services.