Clean room telephone KNZD-63

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KNZD-63 Cleanroom Telephone We specializing in the production and sales of Dustproof telephone waterproof telephone emergency phone intercom door phone for hotel or clean room DESCRIPTION ITEM 1. Plastic material body for easy Installation. 2. Waterproof rating IP55 dust proof. 3. Full keypad with memory, 10 button programmable free-dial telephone. 4. Hands-free button, double loudspeaker. 5. Lightening protection to ITU-T recommendation K.21. 6. POE power supply. 7. Temperature range from -40 degree to +70 degree. 8. Support echo cancellation. 9. Remote software upgrade, configuration and monitoring. 10. Optional 7 minute time out to release the line if the handset is left off hook. This function upon buyer’s requirement). 11. The housing covered with a layer of reflective label for easy identification at night.Optional 12. Application: Tunnel, metro, railway, LRT, speedway, marine, ship,offshore, mine, power plant, bridge etc.