LT-AHG1621HV Hi-PoE++ Switch – Product Overview
The LT-AHG1621HV is a high‑density hybrid PoE switch designed for large‑scale IP surveillance, wireless networks, and enterprise PoE deployments. It features 16 PoE ports (ports 1–4 support IEEE 802.3af/at/bt up to 90W each, ports 5–16 support 30W each), 2 Gigabit uplink RJ45 ports, and 1 Gigabit SFP slot – all 19 ports work simultaneously. With a total PoE budget of 300W, built‑in watchdog on all 16 PoE ports, 250‑meter long‑range transmission, VLAN isolation, 6KV surge protection, OVP, and short‑circuit protection, this unmanaged switch delivers reliable, maintenance‑free operation for IP cameras, VoIP phones, wireless APs, and other high‑power devices.
Key Features
🔌 Intelligent PoE with Priority Management
Automatically detects IEEE 802.3af/at/bt PoE devices – safe for non‑PoE equipment.
Smart power priority mechanism ensures high‑priority ports keep running when total power is low, preventing overload.
Ports 1–4 support PoE++ (90W) for high‑power devices like PTZ cameras, lighting, or Wi‑Fi 6 APs.
🔁 Watchdog Auto‑Recovery (Ports 1–16)
Continuously monitors data communication status on all 16 PoE ports.
If a connected camera or device stops working for 2 minutes, the corresponding port automatically restarts to restore operation – no manual intervention needed.
📡 250m Long‑Range & VLAN Mode (DIP Switch)
Long‑Range Mode: Reduces ports 1–16 to 10Mbps, extending transmission distance up to 250 meters over standard Cat5e/6 cable – perfect for large sites or aging cable lines.
VLAN Mode: Isolates ports 1–16 from each other (they only communicate with uplink ports 17–18), reducing broadcast storms and preventing DHCP conflicts.
🛡️ Comprehensive Protection: 6KV Surge + OVP + Short‑Circuit
6KV lightning protection on both PoE ports and power supply – resilient against surges.
OVP (Over Voltage Protection) – safeguards the switch and connected devices from voltage spikes.
Short‑circuit protection built‑in for safe operation.
Fanless silent design, galvanized steel housing, and low power consumption for reliable 24/7 use.
⚡ High‑Performance Switching
38Gbps switching capacity, 28.272Mpps throughput, and 2Mbit packet buffer.
All ports support non‑blocking wire‑speed forwarding (10/100/1000Mbps).
Store‑and‑forward architecture with full/half‑duplex flow control.
8K MAC address table for large networks.
🔌 Flexible Connectivity & Easy Deployment
16× 10/100/1000Base‑T PoE ports + 2× Gigabit uplink RJ45 + 1× Gigabit SFP slot (fiber uplink up to 100km depending on module).
Plug and play – no configuration required. LED indicators for power (PWR), link (Link), PoE status, and extend mode.
Technical Specifications
| Parameter | Specification |
|---|---|
| PoE Ports | 16 × 10/100/1000Mbps (Ports 1–4: 90W bt; Ports 5–16: 30W af/at) |
| Uplink Ports | 2 × Gigabit RJ45 |
| SFP Slots | 1 × Gigabit SFP |
| Total PoE Budget | 300W |
| PoE Standard | IEEE 802.3af/at/bt |
| Watchdog | Ports 1–16 (auto‑restart after 2min failure) |
| Long‑Range Distance | Up to 250m (10Mbps mode) |
| Surge Protection | 6KV (ports & power) |
| OVP (Over Voltage Protection) | ✅ Supported |
| Short‑Circuit Protection | ✅ Supported |
| Switching Capacity | 38Gbps |
| Throughput | 28.272Mpps |
| Packet Buffer | 2Mbits |
| MAC Table | 8K |
| Operating Temperature | 0°C to 55°C |