1.标准模拟电话。电话线接通了。2.304不锈钢材质外壳,机械强度高,抗冲击性强。3.防破坏手机与内部钢挂绳和环提供了额外的安全性的手机线。4.锌合金键盘。5.带簧片开关的磁钩开关。 6.Optional noise-canceling microphone available. 7.Wall mounted, Simple installation. 8.Weather proof protection IP54. 9.Connection: RJ11 screw terminal pair cable. 10.Multiple color available. 11.Self-made telephone spare part available. 12.CE, FCC, RoHS, ISO9001 compliant.