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Grandstream HD IP Audio Door System with Keypad (GDS3705)

Grandstream HD IP Audio Door System with Keypad (GDS3705)
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  • Product Name:
    Grandstream HD IP Audio Door System with Keypad (GDS3705)
  • Model Number:
  • Brand:
  • Manufacturer Warranty:
    1 Year


Grandstream HD IP Audio Door System with Keypad
The GDS3705 was built for users looking for a strong audio-only facility access and security monitoring solution that can be deployed in environments of all sizes. This audio door system features dual microphones and HD loudspeaker with advanced AEC to offer intercom functionality, can support SIP calls to IP phones and has a built-in RFID chip reader and keypad for secured keyless or key entry. The GDS3705 comes equipped with a zinc alloy metal casing, making it weatherproof and vandal resistant and offers alarm-in and alarm-out support for integration with existing security devices. The GDS3705 integrates with Grandstream’s free management utility software, GDS Manager, allowing RFID card information, as well as the device itself to be fully managed by this software. Thanks to its integration with other Grandstream endpoints like the GXP IP phones, GXV video phones, portable WiFi and DECT IP phones and Grandstream Wave mobile app, the GDS3705 offers a complete end-to-end solution for access control, audio intercom, and security needs

  • HD audio options with up to 1.5m of audio input and 3m of audio output

  • Built-in RFID chip reader for keyless entry

  • Supports SIP calls to IP phones to facilitate communication

  • Built with a metal casing to make it weatherproof and vandal resistant

  • Integrated PoE to power the device and provide a network connection

  • Built-in dual microphone and HD loudspeaker with advanced AEC offers intercom functionality



10M/100M Auto-sensing


PoE IEEE 802.3af Class3

Supply Voltage

12VDC /1A (AC power adapter not included)

SIP/VoIP Support

Yes, broad interoperability

Voice Codecs

G.711μ/a-law, G.722, DTMF (RFC2833, SIP INFO), AEC, ANC

Audio Input

Integrated dual microphones up to 1.5m

Audio Output

HD loudspeaker 2W, up to 3m

Built-in Key Pad

12+1 Metal keys with Blue LED backlight


EM4100 (125kHz)

RFID Number Supported

Up to 2,000 recommended


2 Optocoupler Input, Vin < 15V, for door sensor or other low voltage devices


2 Relay, 125VAC/0.5A or 30VDC/2A, Normal Open or Normal Close, for electric lock, light switch or other relative high voltage devices

Expansion Interface

RS485, Wiegand (26 bits) input and output

Waterproof Certification

IP66 (EN60529)

Vandal Resistance

IK09 (IEC62262)

Temperature Range

-30°C to 60°C


Wall-Surface, In-Wall

Dimension (HxWxD) and Weight    

In wall 217mm x 120mm x 11.6mm; On Wall 173mm x 80mm x 36mm    




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