Description

SEC (Smart Environmental Control) - Advanced digital signal processing and 3D optics

lifelike sound—from crisp high notes to powerful mid

Enterprise-class internet threat management

HDMI Ethernet Channel

Unlocks door by face recognition；

Grandstream GBX20 backlit LCD extension module headset SEC (Smart Environmental Control) -Grandstream GBX20 backlit LCD extension module with 4. 3 inch (272x480) TFT color LCD, 20 per page (each module contains 2 pages, for up to 40 lines per module), Combine up 4 daisy chained modules for 160 contacts extensions, BLF, call park pick up, speed dial, presence, intercom, voice conferencing transfer forward and more

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Grandstream GBX20 backlit LCD extension module headset SEC (Smart Environmental Control) -

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