
Highway Tunnel Indoor Outdoor Weatherproof Sos Emergency Industrial Telephone Intercom. IP66 Weatherproof Rating: Designed for harsh environments with ingress protection rating IP66. Strong Noise Canceling: Optional exclusive technology ensures clear communication in noisy areas. 120W or 250W Amplifier: Built-in amplifier options provide powerful sound output for large areas. One Big Button SOS: Dedicated emergency button for instant SOS calls in critical situations. 18 Months Warranty: Comprehensive 18-month warranty coverage for mechanical defects. OEM/ODM Customization: Full customization, minor customization, and design-based options available. Multiple Certifications: CE, FCC, and RoHS certified for international safety and compliance standards.