England Auto-dial waterproof phone(KNSP-03) - Product
Place of Origin : Shenzhen,China
Product Description
Description:
Defend grade: GB 4208-93 IP 66 / IP67
Call capability of phone: GB/T 15279-94
Application scope: metro, light railroad, speedway, ship, mine, etc.
External configuration specification:
External dimension: 320*205*120mm Weight: 5.5Kg
Installment dimension:139*260mm M8 bolt is used to install
Main features :
1. Cabinet:aluminum alloy die - casting, high anti-violent, able to glisten, convenient for looking for
2. Door cover:orient automatically and good self - closing
Physical Specification
Other Specification : Specification:
1. Applicable For Various Types Of SPC Exchange And Dispatching Exchange System With Feeding Voltage Of 48-60V.
2. Ambient Temperature:-30 ~ +60 Degree Relative Humidity:10%~95%
Atmospheric Pressure: 86~106Kpa Circumstance Noise:less Than 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:-12~-6dB, High Frequency Group:-10~-4dB, Level Difference Between Low And High Frequency Of Compound Signal:0~3dB, 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.
