Fire Alarm Telephone Panel Control Merk TC NAJ2210

NAJ2210 Fire Telephone Switchboard forms a two-bus fire telephone system with NAJ2212 Fire Telephone Extension, NAJ2213 Fire Telephone Jack, NAJ2214 Fire Telephone Extension, NAJ2215 Fire Telephone Jack, and the externally supplied DC24V DC power supply. The fire telephone system is an important part of the fire protection system. If there is a fire in the building, the on-site personnel can quickly and accurately contact the control room of the fire center through the fire phone. The control center can also grasp the scene of the fire in time to take action timely and carry out other necessary communication links to facilitate the fire protection and on-site recovery work.
Specification
1. Power supply: DC 24V ± 10%, the maximum operating current of the switchboard is about 0.5A
2 Bus line resistance (including wire resistance and connection point contact resistance) up to 70 ohms
3 Capacity: up to 99 coded addresses (set by the encoding switch in binary mode) and 1 non-coded address
4 Bus length: less than 1500 meters
5 Extension power consumption: monitoring current <1mA; call current < 20mA
6 Voice frequency range: 300~3400Hz
7 Voice transmission loss: < 5dB
8 Working environment: ambient temperature: -10 ~ 55℃; relative humidity: ≤ 95%
9 Overall structure of the telephone switchboard: 3U standard rack-mounted structure
10 Telephone switchboard size: 482mm (length) × 219 (width) × 133 (height)
11 Weight: 4.0kg