Analog telephone KNZD-27

GSMVoIPSIP

KNZD-27 Inmate phone prison telephone Analogue, VoIP and GSM version for option. Red, Blue, Black, Yellow colors are available customization. DESCRIPTION 1. Cold-roll steel body, vandal & tamper-resistant hardware, easy Installation. 2. Waterproof rating IP55 dust proof. 3. Full keypad with memory, 3 button programmable telephone, support free dial. 4. Magnetic reed hook-switch. 5. Lightening protection to ITU-T recommendation K.21. 6. Heavy Duty handset with hearing Aid compatible receiver, noise canceling microphone. 7. Handset with industrial strong metal cord . 8. POE power supply or DC12V. 9. SUS keypad keep waterproof and dusty proof. 10. Temperature range from -40 degree to +70 degree. 11.Support echo cancellation. 12.Remote software upgrade, configuration and monitoring. 13. Optional 7 minute time out to release the line if the handset is left off hook. This function upon buyer’s requirement). 14. Powder coated in UV stabilized polyester finish. 15. The housing covered with a layer of reflective label for easy identification at night.