Analogue KNSP-04 Tunnel Telephone DESCRIPTION ITEM NO.SP0040012 DESCRIPTION Item number:SP0010032 1. Robust aluminium alloy die-cast body, vandal & tamper-resistant hardware, easy installation. 2. Waterproof rating IP66 dust proof. 3. Without keypad, automatically ring down to pre-designated extension, when button is pushed. 4. Hands free one push call button without handset. (Two or more buttons options.) 5. Lightening protection to ITU-T recommendation K.21. 6. Supper good sound clarity during conversation. 7. With two LED lights to indicate the different status. 8. RJ11 telephone line powered. 9. Door cover: orient automatically and good self-closing, convenient for using. 10. Temperature range from -40 degree to +70 degree. 11. Support echo cancellation. 12. Automatic disconnect circuit to release the line if the other side hang-up the call. 13. Powder coated in UV stabilized polyester finish. 14. The housing covered with a layer of reflective label for easy identification at night. Optional 15. Application: Tunnel, metro, railway, LRT, speedway, marine, ship, offshore, mine, power plant, bridge etc.

Koon Technology The Global Leader In Industrial Communication 1. PSTN analogue telephone 2. DTMF dialing 5. Connection: RJ11 screw terminal pair cable 6. Applicable for various types of SPC exchange PABX and dispatching exchange system with feeding voltage of 33-60V. 7. Ambient temperature:-30 ~ +60 degree. Relative humidity:10%~95% Atmospheric pressure: 86~106Kpa Circumstance noise:less than 60dB(A) 8. Sound level of ringing:over 70dB(A). 10.Call transmission index:(5KM)SLR<12,RLR<-1,STMR>10, output impedance is 600 Ohm. maximum distance: 7KM 11. Connection: RJ11 screw terminal pair cable (or...