Metro SOS call key phone

*Designed to work on Railway, highway, tunnel, etc.

*Housed in robust aluminium die case with spring loaded door, it will offer protection against the outdoor environment, vandals resistance and rot resistance.


*European/UK standards for EMC and US FCC, telephony, waterproofing IP66, and lightening protection together with offering the level of performance and reliability demanded in such an environment.


*DTMF(Dual Tone Multi Frequency)
*Matching with most PABX,PBX and PAX systems.


Main Product features
1. Robust aluminium alloy die-cast body,
2. One button for emergency call, Illuminated button optional.
3. Door cover: orient automatically and good self - closing, self-protection when open the door, convenient for use. safety design with patent.
4. Weather resistant to IP66 standard, service temperature range from:-30'C to +75'C
5. Telephone line powered. No external power or battery back up required.
6. Lightening protection to ITU-T recommendation K.21
7. Hearing aid compatible receiver, noise canceling microphone.
8. Selectable 7 minute time out, to release the line if the handset is left off hook, optional
9. Vandal resistant and tamper-resistant hardware,
10. Easy installation/ replacement


TECHNICAL SPECIFICATION
1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of 48-60V.
2. Ambient temperature:-30'C~60'C Relative humidity:10%~95%Atmospheric pressure: 86~106Kpa Circumstance noise:≤ 60dB(A)
3. Sound level of ringing: ≥70dB(A).
4. Standard frequency: low frequency group: 697, 770, 852, 941Hz,high frequency group: 1209, 1336, 1477Hz, frequency deviation: ≤±1.5%If service line is a 3Km signal－level :Standard frequency : low frequency group : -9dB±3dB , high frequency group : -7dB±3dB, level difference between low and high frequency of compound signal : 2±1dB , the total distortion caused by intermodulation of harmonic wave is lower than the basic level by at least 20dB.
5. Call transmission index: (5KM)SLR≤12,RLR≤-1,STMR≥10, output impedance is 600Ω.


Certification:
EMC:
EN55022:2006 emissions
EN55024:1998 + A1:2001 immunity
Transients/Lightning
ITU-T recommendations K.21 (07/2003)
Ingress Protection:
GB4208-93 IP66
FCC


Packing detail:
1pcs in each inner CTN box
size: 43.3 x 27.6 x 19.1 G.W: 6.6kg
4pcs in outer CTN box, size: 56.6 x 44.5 x42 G.W: 17kg
20GP: 1000PCS
40GP: 2000PCS
40HQ: 2200PCS