One-touch calling, convenient and fast, can effectively solve the five-way intercom call in the monitoring center, machine room, car, car roof, and pit bottom. Eliminating the need for wiring saves a lot of expensive line costs; eliminating the need for wiring greatly saves the high construction costs of laying the lines; saves a lot of maintenance costs due to line failures, aging and other factors; completely eliminates the costs caused by laying the lines Damage to buildings and roads; the monitoring center position can be adjusted arbitrarily as needed without any line adjustment; the entire system construction is extremely simple, the construction period is short, and the effect is fast; the wireless distance covers a wide range, and the anti-interference ability is strong within a radius of 3 kilometers. The sound quality is clear.
If the person working in the hoistway is in danger of being trapped and cannot escape through the car or the hoistway, the elevator wireless intercom system shall be provided with an alarm device in the place where the danger exists. The alarm device shall meet the requirements of 2 and 3 below. The top and bottom pits should be equipped with intercom devices.
Emergency alarm device
1. In order to enable passengers to call for assistance outside the car, an alarm device should be installed inside the car that is easy for passengers to identify and reach.
2. The power supply of the device should come from the required emergency lighting power or equivalent power.
Note: 2 Not applicable to the case where the telephone in the car is connected to the public telephone network.
3. The device should use an intercom system to continuously communicate with the rescue service. After activating this intercom system, the trapped passengers should not need to do any other operations.
Intercom devices should be installed in the car and outside.
4. If the elevator travel is more than 30m, an intercom system or similar device powered by an emergency power supply should be installed between the car and the machine room.
Intercom equipment should be installed in the computer room.
According to the above, the intercom device should be installed in the machine room, car roof, car, pit and outside duty.