Hotel Hospital Dustproof Cleanroom Emergency Intercoms for Public Service

Hotel Hospital Dustproof Cleanroom Emergency Intercoms for Public Service
Main Features:
1. Handset free, double loudspeaker, with indicator display while speaking.
2. Lightening protection to ITU-T K.21
3. 3memory keys.
4. Adjustable 7minute timeout optional
5. Waterproof grade is IP55
6. Support hotline call, can realize ring off automatically by the receiver
7. The design is super thin and smart. Embed style and hanging style can be chosen.
8. Analog and VOIP version (optional).Application Examples:
As Public telephone for indoor ,clean room ,hospital ,laboratoty ,elevator .etc.Main technical indexes:
1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of 33-60V.
2. Ambient temperature: -30 ~+60 degreeRelativeRelative 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%~+1.5%
If service line is a3Km signal-level:
Standard frequency: low frequency group: -12dB~-6dB, high frequency group: -10dB~-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 20dB.
5. Call transmission index: (5KM)SLR<12, RLR<-1, STMR>10, output impedance is 600 Ohm.Specification:Namea key call clean room telephoneModeKNZD-63ASize205*105*34mmTexture of materialABSEnvironment temperature-25ºC~+50ºCRelative humidity45%~95%Atmospheric pressure86~106KpaEnvironment noise90≤dB(IP type)Ringing level85dbCommunication Transfer index(5Km)SLR ≤12,RLR ≤-1,STMR ≥10Power supplyDC5V1A,220V power adapterDigital signal transmissionsupport SIP2.0 and connect to network signal
Installation Size: