T10椎体(三)：外破坏证据证明付费电话

T10(III): Outdoor Vandalism-Proof Pay phone The outdoor payphone - T10(III) is especially designed to give high resistance against vandalism and lightening surge to withstand all rough environments. Customers can make phone calls by manually entering access code + account number + password of a calling card. Features *Steel casing provides excellent protection against vandalism*Function keys for follow-on calls and redial*Designed for low power consumption*Free and emergency number can be specified to permit*Good anti-thunder and anti-interference performance Specifications Environmental *Operating Temperature:-25 °C to + 55 °C*Relative Humidity:10% to 95%*Noise:<= 60 dB (A)*Atmosphere Pressure:86 to 106 kPa Structural *Height: 280mm*Width: 180mm*Depth: 50mm*Weight: 3kg*Keypad: Metallic keys*Housing Material: Steel*Pull Resistance of Handset Cord: Not less than 150 kg Electrical *Power Supply: Line powered*Transmission Performance*Sending loudness rating (SLR): 7 15 dB- Receiving loudness rating (RLR): 1 -6 dB- Side-tone masking rating (STMR): >= 7 dB*Ring- Frequency Range: 10 to 60 Hz- Ring Voltage: 30 120 Vrms*DTMF Transmission Level- High Frequency Group:7 dBm ± 2 dB- Low Frequency Group:9 dBm ± 2 dB*Isolation Resistance between Metallic Parts and Line: >= 100 MΩ (measured under voltage of DC 100V) Pictures