Main Product features 1. Robust aluminium alloy die-cast body 2. Full keypad with memory, 10 button programmable speed-dial telephone, Illuminated button optional 3. Door cover: orient automatically and good self - closing, convenient for use. 4. Weather resistant to IP66 standard, service temperature range from:-30' to +75'C 5. Magnetic reed hook-switch 6. Telephone line powered. No external power or battery back up required. 7. Lightening protection to ITU-T recommendation K.218. Handset: made of special engineering plastic, high anti-knock resistance, Weatherproof, armoured cable optional, 9. Hearing Aid compatible receiver, Noise canceling microphone. 10. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational. 11. Vandal resistant and tamper-resistant hardware, 12. Easy installation/ replacement