1.标准的模拟电话。SIP版本可用。2.坚固的外壳,铝合金压铸体。3.采用环氧粉末涂层的轧钢面板,提供完全的防尘和防潮保护。4.防破坏不锈钢按钮。一个按钮是应答,另一个按钮是紧急呼叫。 The emergency Phone number can be set according to customer’s request. 5.All weather protection IP66-67. 6.Horn & Lamp on the top is available. 7.With external power supply, sound level is more than 80db. 8.Hands-free Operation. 9.Wall mounted. 10.Self-made telephone spare part available. 11. CE, FCC, RoHS, ISO9001 compliant.