Expressway emergency telephone in tunnel when accident or a vehicle breakdown, can accurately, rapidly call to highway management departments. In order to improve the system reliability, the system uses optical fiber transmission. The emergency telephone

SPQ-M-KT6 is installed in the seal waterproof box, can be used outdoors. Suitable for parks, scenic spots, station, wharf, pedestrian street and other public places to do service telephone, call for help, can also be installed in the expressway tunnel for

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.2. Can use in a strong noise environment3. Door cover: orient automatically and good self - closing, convenient for use.4. Works with any s

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.2. Can use in a strong noise environment3. Door cover: orient automatically and good self - closing, convenient for use.4. Works with any s

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation. Shell material is 1.5mm thick steel plate, ASB project is expected to handle, zinc alloy keypad, zinc alloy hook, rugged and durable, able to

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.2. WEATHER-PROOF! The highest level of waterproof in china IP673. Door cover: orient automatically and good self - closing, convenient for

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.2. WEATHER-PROOF! The highest level of waterproof in china IP673. Door cover: orient automatically and good self - closing, convenient for

SPQ-S-DMT series telephone access control using patented technology, using common telephone line distal opening lock. This initiative is revolution of access control intercom system. The system composition by telephone access the intercom host, electric c

Characteristics:1.Electronic characteristics: Power output: 15V 3000mA DC Storage battery: 12V 3AH Alarm lamb: 12V 100mA Loudspeaker: 8ohm 15W2. Software feature: Support adaptive echo offset, avoid to start broadcasting generat

1. Robust aluminum alloy die-cast body, Vandal resistant and tamper-resistant hardware, and simple installation.2. WEATHER-PROOF! The highest level of waterproof in china IP673. Door cover: orient automatically and good self - closing, convenient for