Admas8012G-M12-12GT Layer 3, 12-Port M12 Switch
  • 12×10/100/1000Mbps Copper Ports (M12 Connector)
  • Rack Mount Full Gigabit Managed M12 Industrial Ethernet Switch
Features and Benefits
  • Two sets of Bypass functions can be activated in case of device power loss to ensure uninterrupted network operation
  • Support various network redundancy protocols such as MW-Ring, EAPS, ERPS, STP/RSTP/MSTP, enhancing network reliability
  • Support static routing, RIPv1/v2, OSPF dynamic routing protocols, enabling route selection and packet forwarding
  • Support multiple power input options, including DC24, DC48, DC110
  • Aluminum alloy enclosure, IP40 protection, fanless design, working temp from -40℃ to +70℃
  • Overview
  • Specifications
  • Downloads
  • Models
Product Description

Admas8012G-M12-12GT is a layer 3 full Gigabit managed rack-mount industrial Ethernet switch. It supports 12 Gigabit copper ports using M12 connectors, meeting the requirements of the rail transportation industry standards, ensuring tight and secure connections suitable for environments with strong vibrations. The Gigabit Copper ports feature 2 sets of Bypass functions, which can be activated in case of a power loss to ensure uninterrupted network operation by bypassing faulty nodes and preventing network interruptions.


This product uses a store-and-forward mechanism, offering robust bandwidth processing capabilities, automatically detecting packet errors, reducing transmission failures, and easily supporting Gigabit networking to ensure stable, reliable, and efficient data transmission. It is built with industrial-grade components and adheres to high-standard system design and production controls.


The switch is designed for standard 19-inch 1U rack-mounted installation and features a high-strength aluminum alloy enclosure. It is rugged and durable, with efficient fanless cooling. It can operate in a wide temperature range from -40 to +70 and provides high-standard industrial protection, making it suitable for various harsh working environments.


Admas8012G-M12-12GT follows key communication standards in the industrial field, ensuring real-time communication and network security. It offers multiple management options, including accessing the switch's command line (CLI) through the CONSOLE port or via TELNET/SSH protocols, accessing the web interface through HTTP/HTTPS, and accessing device MIB through SNMP protocol.


Additionally, it supports various network protocols and industry standards such as RIP, OSPF, VRRP, PIM, EAPS, ERPS, STP/RSTP/MSTP, VLAN, QoS, LACP, IGMP, IGMP Snooping, GMRP, LLDP, 802.1X, ACL, DHCP, SNTP, port mirroring, Ping, and Tracert. The switch also offers features like configuration file upload and download, online firmware upgrades, and other system management capabilities.

Features and Benefits
  1. Support storm suppression for broadcast, multicast, and unknown unicast packets, including broadcast and multicast data packet storm detection, to prevent broadcast storms
  2. Support both static and dynamic link aggregation (LACP), which can increase transmission bandwidth, improve link reliability, and achieve network load balancing
  3. Support 802.1Q VLAN, providing Access, Trunk, and Hybrid interfaces for easy partitioning of multiple broadcast domains, enhancing network security
  4. Support VLAN partitioning based on port, MAC address, protocol, IP subnet, and other methods, suitable for different network environments
  5. Support GVRP protocol for dynamic distribution, registration, and propagation of VLAN attributes, maintaining dynamic VLANs
  6. Support MAC address table with aging time limit, static unicast/multicast MAC address binding with interfaces to ensure the use of legitimate users
  7. Support multicast protocols such as PIM, IGMP, GMRP, IGMP Snooping, etc., reducing multicast data broadcast in the network and saving network resources
  8. Support LLDP (Link Layer Discovery Protocol) for obtaining LLDP neighbor device information, monitoring link status, facilitating topology management, and fault location
  9. Support ERPS (Ethernet Ring Protection Switching) for Ethernet ring protection technology, providing ring networking, link backup, fast convergence, and improving network stability
  10. Support EAPS (Ethernet Automatic Protection Switching) and MW-RingV2 private ring network protocols, enhancing the reliability of system communication
  11. Support STP (Spanning Tree Protocol), RSTP (Rapid Spanning Tree Protocol), MSTP (Multiple Spanning Tree Protocol) to eliminate network loops and improve network reliability
  12. Support VRRP (Virtual Router Redundancy Protocol) to form a virtual router with multiple router devices for redundancy and backup
  13. Support IPv4 static route configuration, RIPv1/v2, OSPF dynamic routing protocols for routing selection and packet forwarding
  14. Support network access via HTTP, HTTPS, TELNET, SSH for secure remote login using SSH
  15. Support SNMPv1/v2c/v3 for information querying, modification, and troubleshooting through MIB (Management Information Base) network management system, enabling centralized management
  16. Support QoS (Quality of Service) to prioritize voice, video, and critical data transmission in network devices to resolve network congestion
  17. Support ACL (Access Control List) based on source/destination IP and MAC addresses to filter TCP/UDP/ICMP/IGMP packets
  18. Support 802.1X port authentication for user authentication and access control
  19. Support DHCPv4 server for centralized dynamic management and configuration of user IP addresses



Support port configuration, port rate limiting, storm suppression, storm detection, static port aggregation, and LACP

Support 802.1Q VLAN, VLAN partitioning based on port/MAC/subnet/protocol, GVRP, and port isolation

Support MAC address aging, static MAC address forwarding and filtering, and MAC address binding with learning restrictions


Support MW-RingV2 private ring network technology

Support EAPS (Ethernet Automatic Protection Switching), ERPS (Ethernet Ring Protection Switching)

Support STP (Spanning Tree Protocol), RSTP (Rapid Spanning Tree Protocol), MSTP (Multiple Spanning Tree Protocol)


Support IGMPv1/v2/v3 and IGMP Snooping

Support static multicast with GMRP

Support PIM-DM (Protocol Independent Multicast - Dense Mode) and PIM-SM (Protocol Independent Multicast - Sparse Mode)


Support static routing

Support RIPv1/v2 and OSPF dynamic routing

Support VRRP (Virtual Router Redundancy Protocol)

Security Management

Support HTTP, HTTPS, TELNET, and SSH access methods

Support ACL (Access Control List) for filtering data at Layer 2 to 4

Support 802.1X port authentication and MAC address authentication.

Support loopback detection and alarms

Management and Maintenance

Support DHCP Client/Server/Relay/Snooping

Support QoS, SNMP v1/v2c/v3, SNMPv1/v2c Traps, and LLDP

Support port mirroring, Ping, and Tracert

Support user access control, system logs, local time setting synchronization, and SNTP network time synchronization

Support online reboot, factory reset, system upgrade, and configuration file upload/download

Support centralized management through unified upper-level software

Switch Capability

Processing Type


Backplane Bandwidth


Buffer Size


MAC Table Size



1G Copper Port

12*10/100/1000Base-T(X) auto-sensing copper ports, using M12 (X-Code 8-Pin Female) connectors, supporting full/half duplex, auto MDI/MDI-X. Support two sets of Bypass functions, where port 1 and port 2 form one set of Bypass, and port 3 and port 4 form another set of Bypass


1 relay alarm output, using an M12 (A-Code 4-Pin Female) connector


1 Console port with RS232 signals, using an M12 (A-Code 4-Pin Female) connector, used for device debugging and command-line configuration

Status LED

Power indicator, Operation indicator, Alarm indicator, Port indicator

Power Supply

Input Voltage

DC18~36V, DC36~72V or DC50~160V is optional

Power Consumption

15W(full load)


M23(A-Code 6-Pin Male) connector

Physical Characteristics


482.6×44×315 mm (mounting clips included)


Standard 19-inch 1U rack-mounted installation

IP Code


Working Environment

Operating Temp


Storage Temp


Relative Humidity

5%~95% (non-condensing)

Industry Standard


IEC 61000-4-2 (ESD): contact discharge ±8kV, air discharge ±15kV

IEC 61000-4-5 (Surge): power, Ethernet: common mode ±2kV, differential mode ±2kV

IEC 61000-4-4 (EFT): power supply: ±2kV; communication port: ±2kV








Standard Model

1G Copper Port

Input Voltage










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