ZBT WiFi 6 Router | Dual 5G/4G M.2 Slots | 3000Mbps | MT7981B | Hardware Watchdog - Z8119AX-M2-T

ZBT Z8119AX-M2-T — WiFi 6 Router with Dual M.2 5G/4G Modules & Hardware WatchdogThe Z8119AX-M2-T is a powerful enterprise-grade WiFi 6 router built on the MT7981B ARM Cortex-A53 dual-core platform. With two built-in M.2 interfaces supporting simultaneous dual 5G/4G module expansion (USB3.0 & USB2.0), 512MB DDR3 RAM, and a hardware watchdog for automatic crash recovery, it delivers uncompromising reliability for mission-critical deployments — from industrial IoT to enterprise branch offices.Key Features MT7981B ARM Cortex-A53 Dual-Core CPU @ 1.3GHz for stable high-throughput routing MT7976CN WiFi 6 Chip: Up to 3000Mbps total (574Mbps @ 2.4G + 2400Mbps @ 5.8G), OFDMA, MU-MIMO 512MB DDR3 RAM: Ample memory for multi-module concurrent operation 2× M.2 Interfaces: Supports expansion of 2 independent 5G/4G modules simultaneously via USB3.0 & USB2.0 Hardware Watchdog: Auto-detects system heartbeat every 1 second; restarts entire system within 15 seconds if no heartbeat for 120 seconds; independently power-cycles failed 5G/4G modules via GPIO Flash: SPI NAND Flash 128MB (NOR Flash 16MB & eMMC 8GB~256GB optional) Dimensions: 300 × 181 × 35 mm | Color: Black | Power: 12V/2.5A Hardware Specifications Component Specification CPU MT7981B ARM Cortex-A53 Dual-Core, 1.3GHz WiFi Chip MT7976CN, IEEE 802.11n/g/b/a/ac/ax, up to 3000Mbps RAM DDR3 512MB Flash SPI NAND Flash 128MB (NOR Flash 16MB optional; eMMC 8GB~256GB optional) 5G/4G Interface 2× M.2, USB3.0 + USB2.0 bus, supports dual 5G/4G module expansion Color Black Dimensions (L×W×H) 300 × 181 × 35 mm Hardware WatchdogThe hardware watchdog activates automatically on power-on and monitors the routing system heartbeat every 1 second. If no heartbeat is detected within 120 seconds (e.g., system crash), it shuts down and restarts the entire system within 15 seconds. Fault Scenario Watchdog Action Routing system crash Restart the whole system 5G/4G module dialing crash Only restart the affected module (via GPIO power control) 5G/4G Mobile CommunicationThe device features 2× M.2 interfaces that can expand 2 independent 5G mobile communication modules simultaneously. Both M.2 interfaces support USB3.0 and USB2.0 buses for 5G module communication. Supported frequency bands depend on the selected 4G/5G module — please contact ZBT customer service or refer to the specific module datasheet for band details.WiFi 2.4G Specifications Standards: IEEE 802.11 b/g/n/ac/ax | Bandwidth: 20MHz / 40MHz Modulation: 1024-QAM / OFDMA | MIMO: 2T2R MU-MIMO | Max Rate: 574Mbps Working Frequency: 2412–2484 MHz 2.4G Receive Sensitivity (Rated) Mode Sensitivity 802.11B 11Mbps -87 dBm 802.11G 54Mbps -73 dBm 802.11N HT20@MCS7 -70 dBm 802.11N HT40@MCS7 -68 dBm 802.11AC VHT20@MCS8 -66 dBm 802.11AC VHT40@MCS9 -64 dBm 802.11AX HE20@MCS11 -62 dBm 802.11AX HE40@MCS11 -60 dBm 2.4G Transmit Power (Rated) Mode Power 802.11B 11Mbps 21 dBm 802.11G 54Mbps 19 dBm 802.11N HT20@MCS7 18 dBm 802.11N HT40@MCS7 18 dBm 802.11AC VHT20@MCS8 17 dBm 802.11AC VHT40@MCS9 17 dBm 802.11AX HE20@MCS11 16 dBm 802.11AX HE40@MCS11 16 dBm WiFi 5.8G Specifications Standards: IEEE 802.11 a/ac/ax | Bandwidth: 20MHz / 40MHz / 80MHz / 160MHz Modulation: 1024-QAM / OFDMA | MIMO: 2T3R MU-MIMO | Max Rate: 2400Mbps Working Frequency: 5180–5825 MHz 5.8G Receive Sensitivity (Rated) Mode Sensitivity 802.11G 54Mbps -72 dBm 802.11N HT20@MCS7 -70 dBm 802.11N HT40@MCS7 -68 dBm 802.11AC VHT20@MCS8 -66 dBm 802.11AC VHT40@MCS9 -64 dBm 802.11AC VHT80@MCS9 -62 dBm 802.11AX HE20@MCS11 -60 dBm 802.11AX HE40@MCS11 -57 dBm 802.11AX HE80@MCS11 -55 dBm 5.8G Transmit Power (Rated) Mode Power 802.11G 54Mbps 19 dBm 802.11N HT20@MCS7 18 dBm 802.11N HT40@MCS7 17 dBm 802.11AC VHT20@MCS8 17 dBm 802.11AC VHT40@MCS9 16 dBm 802.11AC VHT80@MCS9 15 dBm 802.11AX HE20@MCS11 17 dBm 802.11AX HE40@MCS11 16 dBm 802.11AX HE80@MCS11 15 dBm Power Supply Parameter Min Rated Max Unit Operating Voltage 9 12 54 V Absolute Working Voltage 9 — 57 V Working Current (VIN=12V) 2 2.5 3.5 A ⚠️ Use the ZBT standard 12V/2.5A power adapter. If using batteries or vehicle power, apply anti-static and anti-surge measures.Environmental Requirements Parameter Value Operating Temperature 0°C to 40°C Storage Temperature -40°C to 70°C Working Humidity 10%–90% RH (Non-condensing) Storage Humidity 5%–90% RH (Non-condensing) Default Configuration Default IP: 192.168.1.1 Username / Password: root / admin 2.4G SSID: WIFI6-XXXXXX (last 6 digits of MAC, no password by default) 5.8G SSID: WIFI6-5G-XXXXXX (last 6 digits of MAC, no password by default) Compatible with ZBT OS firmware and OpenWRT firmware In the Box Z8119AX-M2-T Unit × 1 12V/2.5A Power Adapter × 1 8P8C Network Cable × 1 User Manual × 1 Certificate × 1