Elevator Auto Dial Phone

详情

Main Product Features

Technical Indexes

1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of ****0V.
2. Ambient temperature: **0 ~ **0 degreeRelative   Relative humidity: *0%~*5%
Atmospheric pressure: *6~**6Kpa Circumstance noise: <*0dB(A)
3. Sound level of ringing: >*0dB(A).
4. Standard frequency: low frequency group: **7, **0, **2, **1Hz, 
    high frequency group: ***9, ***6, ***7Hz, frequency deviation: *1.5%~*1.5%
   If service line is a 3Km signal-level: 
   Standard frequency: low frequency group: **2dB~*6dB, high frequency group: **0dB~*4dB, level difference between low and   high frequency of compound signal: 1dB~3dB, the total distortion caused by intermodulation of harmonic wave is lower than the basic level by at least *0dB.
5. Call transmission index: (5KM)SLR<*2, RLR<*1, STMR>*0, output impedance is **0 Ohm.
6. Super strong function is available for dialing *2 groups of numbers stored in the memory (maximum length of each number is*6 digits)

Machine size:**0 ***0 **0( mm )      

Carton size:**0 ***0 **0( mm )

Packaging material: pearl cotton, carton

Gross weight:3.*1KG

Net weight:2.*1KG