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Detail

SR309

SR309

Life Cycle: EOL, FW maintenance only

Regions:

4G LTE Router & Gateway

for South KOREA - SKT carrier only

Technical description

SmartFlex SR309 is an industrial cellular router intended for the South Korean markets - SKT carrier only.
This router is an ideal device for wireless communication in mobile networks that make use of LTE, HSPA+, UMTS, EDGE, or GPRS technology. Due to the high speed of data transfer up to 150 Mbps (download) and up to 50 Mbps (upload) is this router is an ideal solution for specialized M2M devices and IoT as well as for the wireless connection of traffic and security camera systems, individual computers, LAN networks, automatic teller machines (ATM) and other self-service terminals. 
The standard configuration includes two Ethernet 10/100 ports, one USB 2.0 Host port, two binary inputs, and one output (I/O connector). The device also has two readers for 3 V and 1.8 V SIM cards, which are located on the rear panel of the router. The router also includes a microSD card port that supports up to 64 GB card storage (32 GB in the case of SDHC cards). The router can be equipped with a WiFi module, but this must be part of the initial configuration – it cannot be added to the router at some point in the future. The router can be equipped with PoE PSE (Power over Ethernet – Power Source Equipment), which lets the router power other devices via Ethernet. The SmartFlex can also be configured with a wide variety of port options. These can be SWITCH – three switched Ethernet ports; RS232-RS485/422 – a combination of serial interfaces. The router can be provided only in a metal casing.
Configuration of the router may be done via a password-protected Web interface. The web interface provides detailed statistics about the router’s activities, signal strength, detailed system log, etc. The router supports the creation of VPN tunnels using IPSec, OpenVPN, and L2TP to ensure safe communication. DHCP, NAT, NAT-T, DynDNS, NTP, VRRP, control by SMS, backup primary connection, and many other functions are supported. The router provides diagnostic functions which include automatically monitoring the PPP connection, automatic restart in case of connection losses, and a hardware watchdog that monitors the router status. The user may insert Linux scripts that are started on various actions. It is possible to create up to four different configurations for the same router. These configurations can be switched whenever necessary via a Web interface, SMS, or binary input status. The router can automatically upgrade its configuration and firmware from your central server. This allows for mass reconfiguration of numerous routers at the same time. The router also supports additional software like R-SeeNet for permanent traffic monitoring of routers.

Documents to download

v 6.6.2 (28.07.2026)

Firmware_Compatibility_Chart_20260728.pdf | 354 KB

Release_Notes_6.6.2.pdf | 226 KB

spectre-v3-lte.zip | 23 MB

v 6.6.1 (24.04.2026)

Firmware_Compatibility_Chart_20260424.pdf | 336 KB

Release_Notes_6.6.1.pdf | 222 KB

spectre-v3-lte.zip | 23 MB

v 6.6.0 (17.12.2025)

Firmware_Compatibility_Chart_20251217.pdf | 249 KB

Release_Notes_6.6.0.pdf | 232 KB

spectre-v3-lte.zip | 21 MB

v 6.5.4 (22.07.2025)

Firmware_Compatibility_Chart_20250722.pdf | 245 KB

Release_Notes_6.5.4.pdf | 195 KB

spectre-v3-lte.zip | 21 MB

v 6.5.3 (28.05.2025)

Firmware_Compatibility_Chart_20250528.pdf | 243 KB

Release_Notes_6.5.3.pdf | 211 KB

spectre-v3-lte.zip | 21 MB

v 6.5.2 (03.03.2025)

Firmware_Compatibility_Chart_20250303.pdf | 248 KB

Release_Notes_6.5.2.pdf | 237 KB

spectre-v3-lte.zip | 20 MB

v 6.5.1 (28.11.2024)

Firmware_Compatibility_Chart_20241128.pdf | 250 KB

Release_Notes_6.5.1.pdf | 225 KB

spectre-v3-lte.zip | 21 MB

v 6.5.0 (08.10.2024)

Firmware_Compatibility_Chart_20241008.pdf | 287 KB

Release_Notes_6.5.0.pdf | 263 KB

spectre-v3-lte.zip | 21 MB

v 6.4.3 (16.08.2024)

Firmware_Compatibility_Chart_20240816.pdf | 286 KB

Release_Notes_6.4.3.pdf | 188 KB

spectre-v3-lte.zip | 19 MB

v 6.4.2 (29.05.2024)

Firmware_Compatibility_Chart_20240529.pdf | 286 KB

Release_Notes_6.4.2.pdf | 237 KB

spectre-v3-lte.zip | 19 MB

v 6.4.1 (27.03.2024)

Firmware_Compatibility_Chart_20240327.pdf | 246 KB

Release_Notes_6.4.1.pdf | 192 KB

spectre-v3-lte.zip | 19 MB

v 6.4.0 (07.02.2024)

Firmware_Compatibility_Chart_20240207.pdf | 251 KB

Release_Notes_6.4.0.pdf | 266 KB

spectre-v3-lte.zip | 19 MB

v 6.3.10 (05.05.2023)

Firmware_Distribution_Overview_20230505.pdf | 249 KB

release-notes-6.3.10.pdf | 267 KB

spectre-v3-lte.zip | 16 MB

v 6.3.9 (04.01.2023)

Firmware_Distribution_Overview_20230104.pdf | 248 KB

release-notes-6.3.9.pdf | 328 KB

spectre-v3-lte.zip | 16 MB

v 6.3.8 (02.12.2022)

firmware-distribution-overview-20221202.pdf | 246 KB

release-notes-6.3.8.pdf | 401 KB

spectre-v3-lte.zip | 16 MB

v 6.3.7 (27.09.2022)

firmware-distribution-overview-20220927.pdf | 241 KB

release-notes-6.3.7.pdf | 383 KB

spectre-v3-lte.zip | 16 MB

v 6.3.6 (16.06.2022)

firmware-distribution-overview-20220616.pdf | 240 KB

release-notes-6.3.6.pdf | 817 KB

spectre-v3-lte.zip | 15 MB

v 6.3.5 (20.04.2022)

firmware-distribution-overview-20220420.pdf | 185 KB

release-notes-6.3.5.pdf | 805 KB

spectre-v3-lte.zip | 15 MB

v 6.3.4 (09.02.2022)

firmware-distribution-overview-20220209.pdf | 238 KB

release-notes-6.3.4.pdf | 826 KB

spectre-v3-lte.zip | 15 MB

v 6.3.3 (13.12.2021)

firmware-distribution-overview-20211213.pdf | 594 KB

release-notes-6.3.3.pdf | 811 KB

spectre-v3-lte.zip | 15 MB

v 6.3.2 (30.09.2021)

firmware-distribution-overview-20210930.pdf | 234 KB

release-notes-6.3.2.pdf | 822 KB

spectre-v3-lte.zip | 15 MB

v 6.3.1 (21.07.2021)

firmware-distribution-overview-20210721.pdf | 236 KB

release-notes-6.3.1.pdf | 779 KB

spectre-v3-lte.zip | 15 MB

v 6.3.0 (07.05.2021)

firmware-distribution-overview-20210507.pdf | 238 KB

release-notes-6.3.0.pdf | 776 KB

spectre-v3-lte.zip | 15 MB

v 6.2.9 (07.04.2021)

firmware-distribution-overview-20210407.pdf | 234 KB

release-notes-6.2.9.pdf | 753 KB

spectre-v3-lte.zip | 14 MB

v 6.2.8 (19.02.2021)

firmware-distribution-overview-20210219.pdf | 595 KB

release-notes-6.2.8.pdf | 787 KB

spectre-v3-lte.zip | 14 MB

v 6.2.7 (17.12.2020)

firmware-distribution-overview-20201217.pdf | 228 KB

release-notes-6.2.7.pdf | 640 KB

spectre-v3-lte.zip | 14 MB

v 6.2.6 (11.09.2020)

firmware-distribution-overview-20200911.pdf | 586 KB

release_notes_6.2.6.pdf | 618 KB

spectre-v3-lte.zip | 14 MB

v 6.2.5 (13.06.2020)

firmware-distribution-overview-20200613.pdf | 586 KB

release-notes-6.2.5.pdf | 615 KB

spectre-v3-lte.zip | 14 MB

v 6.2.4 (25.04.2020)

firmware-distribution-overview-20200427.pdf | 586 KB

release-notes-6.2.4.pdf | 643 KB

spectre-v3-lte.zip | 14 MB

v 6.2.3 (11.02.2020)

firmware-distribution-overview-20200211.pdf | 587 KB

release-notes-6.2.3.pdf | 614 KB

spectre-v3-lte.zip | 14 MB

v 6.2.2 (16.12.2019)

firmware-distribution-overview-20191216.pdf | 639 KB

release-notes-6.2.2.pdf | 632 KB

spectre-v3-lte.tar.gz | 14 MB

v 6.2.1 (16.10.2019)

firmware-distribution-overview_20191107.pdf | 382 KB

release-notes-6.2.1.pdf | 644 KB

spectre-v3-lte.tar.gz | 14 MB

v 6.2.0 (16.08.2019)

firmware-distribution-overview_20190816.pdf | 381 KB

release-notes-6.2.0.pdf | 768 KB

spectre-v3-lte.tar.gz | 41 MB

v 6.1.9 (23.04.2019)

firmware-distribution-overview-20190423.pdf | 384 KB

release-notes-6.1.9.pdf | 829 KB

spectre-v3-lte.tar.gz | 35 MB

v 6.1.8 (08.11.2018)

firmware-distribution-overview_20181204.pdf | 379 KB

release-notes-6.1.8.pdf | 871 KB

spectre-v3-lte.tar.gz | 35 MB

v 6.1.7 (25.07.2018)

firmware-distribution-overview-20180725.pdf | 379 KB

release-notes-6.1.7.pdf | 830 KB

spectre-v3-lte.tar.gz | 12 MB

v 6.1.6 (11.03.2018)

firmware-distribution-overview-20180311.pdf | 378 KB

release-notes-6.1.6.pdf | 825 KB

spectre-v3-lte.tar.gz | 12 MB

v 6.1.5 (03.01.2018)

Firmware_Distribution_Overview_20180212.pdf | 379 KB

Release_Notes_6.1.5.pdf | 791 KB

spectre-v3-lte.tar.gz | 12 MB

v 6.1.4 (25.09.2017)

Firmware Distribution Overview_20170927.pdf | 379 KB

Release_Notes_6.1.4.pdf | 811 KB

SPECTRE-v3-LTE.tar.gz | 12 MB