Tiny-Size 5.8Ghz wireless bridge

2km transmission distance | IP-64 waterproof | 4 priority queues | Power supply purchased separately

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  • Model:
  • ST508E
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Product Name:Tiny-Size 5.8Ghz wireless bridge

  • Model:ST508E

Compact-Size 5Ghz wireless bridge


ST508E is a high-performance and multi-purpose 5GHz wireless bridge product with Qualcomm core solution. High TX power, high-quality hardware and a built-in 8dBi directional antenna make it an ideal choice for short-range transmissions . It is recommended for the last 1 kilometer and the longest transmission distance can reach 2 kilometers. It is suitable for various video surveillance scenarios such as agriculture, forestry, industry, commerce, transportation , tower crane and elevator monitoring. The iPoll 3 intelligent dynamic polling protocol based on TDMA technology is well-known in the wireless industry for its excellent anti-interference ability. Even in high-density and severe interference scenarios, iPoll 3 can still ensure stable transmission and higher throughput. iPoll 3 supports wireless traffic optimization, the QoS priority supports DSCP mode under 802.1p, 4 priority queues is supported and the most complete support for multiple services has been provided. The design of the product meets the IP-64 waterproof level, and the temperature, humidity and other related indicators are in line with industrial standards, , along with the 2kv surge resistance design to protect equipment in complex electrical environments, the product has high reliability.

Best alternative to high cost wired network transmission

The wireless bridge products can connect two or more local area networks (LAN) together. They transmit network datas through wireless signals, allowing wireless communication between different LANs. Simply put, it transmits network datas and network video surveillance through wireless instead of network cables. Wireless bridge networking usually consists of two or more devices forming a point-to-point or point-to-multipoint network. In many network communication scenarios where wiring is difficult or the distance is too long, the flexible and low-cost wireless bridge solutions can effectively replace wired networks.

Wireless transmission in video surveillance

Wireless transmission is used more and more widely in outdoor video surveillance, especially in park monitoring, construction site, dock monitoring, oil field, etc.

IPoll 3 intelligent polling wireless protocol

The wireless protocol based on TDMA technology can not only eliminate transmission congestion and self-interference generated in outdoor long-distance point-to-multipoint transmission , but also with the latest intelligent polling mechanism it groups the connected stations according to their activity. Stations that require less traffic are assigned to low-activity or idle groups and are allocated less airtime (fewer polling times) while requiring greater traffic stations are assigned to active groups and allocated more airtime (more polling times). By reducing the total number of times of polling the stations, lower latency and higher total throughput are achieved. Even in point-to-multipoint scenario of 1 to 64 or more , the overall network efficiency will not significantly decrease.

Multicast enhancement

The multicast optimization function allows multicast traffic to be sent only to terminals in need, avoiding the waste of network resources.

Advanced QoS

  ●  QoS in iPoll 3 supports transmitting pre-marked data according to priority.

  ●  QoS (L2/L3 or DSCP/COS) - supports different priority traffic types (must be implemented with switches that support corresponding functional mechanisms)

  ●  Providing 4 queue priorities for different services (best effort , background , video , voice)

  ●  Strict policy based

  ●  Supports multiple services (data , voice , video, etc.)

Professional graphical user interface

The device management GUI is based on HTML 5 technology, which is responsive, easy to configure, and adaptable to computer browsers and mobile browsers.

Rich frequency band + non-standard channels +

multiple bandwidths

Supporting 4.9Ghz~6.1 Ghz ultra-wide frequency band. Providing much more options for channel planning and avoiding occupied channels. Supporting multiple bandwidths of 5Mhz/10Mhz/20Mhz/40Mhz. Providing greater flexibility for transmission distance/capacity/interference avoidance. The narrower the bandwidth, the longer the transmission distance, the stronger the anti-interference, the lower the throughput; the wider the bandwidth, the shorter the transmission distance, the weaker the anti-interference, and the higher throughput. Supporting non-standard channels. Non-standard channels have 5MHz channel step and allow users to select center frequencies will not be valid with 802.11 specification, bringing more possibilities for channel planning and interference avoidance.
Note: Please comply with local laws and regulations when selecting the corresponding channel.

Built-in rich and useful tool set

  ●  Site survey

  ●  Spectrum Analyzer

  ●  Antenna alignment

  ●  Link test

  ●  Ping & Traceroute
With the tools users can easily and efficiently deploy and troubleshoot without resorting to third-party tools.

Network topology

1. Point-to-point

Network topology

2. Point-to-multipoint

Network topology

3. Multi-hop transmission
4. Hybrid networking (point-to-point + point-to-multipoint)

Application scenario

  ●  Emergency communications

  ●  Park video surveillance

  ●  Forest fire prevention

  ●  Wireless broadband

  ●  Power plant

  ●  Environmental monitoring

  ●  Construction tower crane

  ●  Mine site

  ●  Elevator video surveillance





Compact size 5Ghz wireless bridge

High performance 5Ghz wireless bridge

Input voltage

12 - 24 VDC passive PoE

Power adapter

100 – 240 VAC

Max power consumption




802.11a/n, iPoll 3

Output Power

Up to 29 dBm (country dependent)

Receive sensitivity

Varying between -97 and -75 dBm (modulation dependent)


4.9Ghz ~ 6Ghz (country dependent)

Channel bandwidth




Modulation schemes

802.11 a/n: OFDM (64-QAM, 16-QAM, QPSK, BPSK)

Max rate


Error correction

FEC, Selective ARQ


Built-in, 8dBi

Built-in, 15dBi

Coverage Distance

Point to point

Recommended: 1KM
Max: 2KM

Recommended: 3KM
Max: 5KM

Point to multiple points(same model)

Recommended: 0.5KM
Max: 1KM

Recommended: 1KM
Max: 3KM



1*RJ45, 10/100M(PoE in)




Wireless operating modes

Access point (auto WDS), access point (iPoll 3), station (WDS, iPoll 3), station (ARP NAT)

Wireless techniques

Smart station polling, smart auto-channel, adaptive auto modulation, automatic transmit power control (ATPC)

Wireless security

WPA/WPA2 personal, WPA/WPA2 enterprise, WACL, user isolation

Wireless SoS

4 queues prioritization on iPoll 3

Network operating modes

Bridge, router IPv4, router IPv6

Network techniques

Routing with and without NAT, VLAN

WAN protocols

Static IP, DHCP client, PPPoE client


DHCP server, SNMP, NTP client, router advertisement daemon, ping watchdog


HTTP(S) GUI, SSH, SNMP read, Telnet

System monitoring

SNMP v1/2c/3 server, Syslogs, system alerts via e-mail and SNMP trap

Wireless tools

Site survey, link test, antenna alignment


Scheduled reboot

Physical Parameters







IP Protection




Pole Mounting, wall mounting

Pole Mounting

Operating Temperature

-40°C ~ +70°C

Operating Humidity

0 ~ 90 %(non-condensing)

Email contact


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