Using GSM public network should call emergency intercom, do not need to install simple wiring. Urgent call can send the Chinese note to 8 groups’ phone number and 2 voices dialing at the same time. It also can record the voice of the elevator detail address location situation. The local self-provided emergency power, can normal use without the electroless condition. The mobile phone gets deposited or telephone number and the information recorded voice will not lose for power off. It can set alarm text messages in Chinese by itself. It can match cable five orientations communication system. It can remote operation of equipment Settings. It can realize and networking with elevator maintenance, find the fault elevator the first time. It can match wireless emergency alarm cuing component. The local has a password setting protect function. It is an aluminum shell, top-grade, beautiful, hi-fi timbre. It saved abundance expensive cost of lines It saved a large quantity the high construction cost of route laying. It saved a large quantity the maintenance cost of the faulty wiring, aging and other factors. Completely eliminate due to the laying of lines and that the damage of building and roads. The monitoring center position can be adjusted according to the needs, any route with no need for adjustment. The system construction is extremely simple, and shorter construction period and get rapid effective. Wireless distance no limitation, full-duplex interphone, sounds clearer. Built-in Siemens TC35 industry-specific GSM module (automatic double-frequency) Van rx sensitivity: ≤0.1uv Dc for electricity: 12V/1.3AH Size: 190*210*46mm The type of alarm: GSM Chinese text messages and voice dialing Modulation system: Digital frequency modulation (FM) Power supply: ac input : 180v-240v Appearance: Stainless steel Working environment: temperature -30-+60 Celsius degree Humidity≤85% 1. Antenna 2. Phonetic panel 3. GSM module 4. SIM cassettle 5. Power indicator (ac power indicator) 6. Work indicator (starting up or alarm lights on) 7. Online indicator 8. Failure indicator (fault on) 9. Recording indicator 10. Recording switch 11. SIM card interface 12. SIM card button