emergency telephone(knzd-25)

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emergency telephone(knzd-25)
Posting date : Aug 11, 2011
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S02-
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INTRODUCTION As Public telephone for indoor or outdoor, Taxi or bus stands or station, Highway call box Railway, metro, ATM machines side, Tunnel, Port, Dock, Mines, Generation facilities... A good ideal telephone for use in wet or corrosive atmospheres Features: 1. Analogue 2. Stainless steel body, round panel, Magnetic hookswitch 3. Four versions optional a. Autodial when phone is picked up b. Normal phone call c. One to four groups of speed dialing calls d. One to four groups of speed dialing calls basis on normal phone call function 4. The speed-dial number can be optionally set or changed by keypad and it’s very easily operated 5. Tally with the full function of the common telephone 6. Wearable, waterproof, moisture proof, Vandal resistant and tamper-resistant hardware 7. Lightening protection to ITU-T K.21 8. Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational 9. Stainless steel keypad withstands high loads. 10. The stainless steel armoured handset cord is manufactured to withstand high tensile forces. Specification: Main technical indexes: 1. Applicable for various types of SPC exchange and dispatching exchange system with feeding voltage of 48-69V. 2. Ambient temperature: -30 ~ +60 degree 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%~+1.5% If service line is a 3Km 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. Packing details: Unit size: 450*415*40mm Package size: 515*505*175mm GW: 7.5 KG

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