Decide exactly who walks through your door and when
Try the keypad – enter any 4 digits
See It In Action
One device at the door does the work of three systems
Access control, a 4MP HD security camera, and a two-way video intercom — combined into a single Grandstream station. Watch how it secures an entrance.
Grandstream GDS3725 / GDS3726 / GDS3727 — installed & managed by Centra IP
Why Facility Security Matters
A lock and a key haven't kept up with how your business actually works
Keys get copied, lost, and never returned. You can’t see who’s at the door, can’t revoke access when someone leaves, and can’t prove who entered after hours. Modern access control closes those gaps.
RISK 01
Keys you can't control
A single lost or copied key can mean re-keying every lock. With digital credentials, you grant or revoke access for any person, door, or time window in seconds — no locksmith required.
RISK 02
No record of who came in
Every entry is logged with a timestamp and an HD snapshot. If something goes missing or an incident happens, you have a clear, searchable record instead of a guess.
RISK 03
Blind spots at the entrance
A built-in 4MP camera and AI behavior analysis flag loitering or tampering in real time and alert you on your phone — so you see threats before they become incidents.
Three Ways In
Let people in the way that fits your building
The Grandstream GDS3720 Series supports every common credential, so employees, residents, and visitors each get the access method that makes sense for them.
NFC Tap
Staff tap an NFC card, sticker, or key fob — or their phone — and they're in. Issue a credential in minutes and turn it off the moment someone leaves.
Cards · Fobs · Phone
Bluetooth (BLE 5.0)
Hands-free entry from the SecureAccess app on any smartphone. Ideal for managers and frequent visitors who'd rather not carry a card at all.
App · Hands-free
Keycode (PIN)
The GDS3725's backlit 15-key pad lets you hand out PIN codes — including temporary ones for contractors or deliveries that expire on their own.
Permanent · Temporary
Choose Your Station
Three models, matched to your entrance
Every model shares the same 4MP HD camera, two-way intercom, NFC, Bluetooth, and AI security. They differ in how people get in and how rugged the door needs to be — we’ll spec the right one for each opening.
Flagship
GDS3725
Full Keypad
Best for main entrances & public-facing doors
15-key backlit PIN keypad
for code-based entry
NFC, Bluetooth, RFID, QR & app
— every method
Wiegand 26/34 in/out
to tie into legacy systems
Most alarm & relay ports
in the series
Metal · IP66 · IK10 vandal-resistant
GDS3726
Doorbell + Intercom
Best for reception & visitor entrances
Dedicated doorbell button
rings reception or your phone
NFC, Bluetooth, RFID, QR & app
credentials
Wiegand 26/34 in/out
for integration
Two-way HD video intercom
to screen guests
Metal · IP66 · IK10 vandal-resistant
GDS3727
Compact & Wireless
Best for staff-only & low-traffic doors
Dual-band Wi-Fi 6
No data cabling required
NFC, Bluetooth & app entry
for employees
Smallest, lightest unit
in the series
Fast, flexible placement
where wiring is hard
Compact · IP66 · IK07 protection
Built Into Every Model
More than a door reader
4MP
Ultra-HD camera with wide dynamic range & 127° view
AI
Behavior analysis, intrusion & loitering detection
IP66
Weatherproof, with solid-state relay against tampering
Cloud
Manage every door from the SecureAccess app
Secure Your Entrances
Let's lock down your building the smart way
Tell us about your doors and we’ll design an access control system that fits — installed, configured, and supported by our local team across DFW, Tampa, Orlando, and Myrtle Beach.
Or call sales directly: (844) 534-1240