LT-AH2422GHV-B Hi-PoE++ Switch – Product Overview
The LT-AH2422GHV-B is a high‑density hybrid PoE switch designed for cost‑effective IP surveillance, wireless networks, and commercial PoE deployments. It features 24 PoE ports (ports 1–4 support IEEE 802.3af/at/bt up to 90W each, ports 5–24 support 30W each), 2 Gigabit uplink RJ45 ports, and 2 Gigabit SFP slots – all 28 ports work simultaneously. The PoE ports operate at 10/100Mbps (Fast Ethernet), while uplink ports provide Gigabit connectivity to NVRs or core switches. With a powerful built‑in 500W power supply, this switch delivers ample power for multiple high‑power devices. Built‑in watchdog on all 24 PoE ports, 250‑meter long‑range transmission, VLAN isolation, 6KV surge protection, OVP, and short‑circuit protection make it a reliable, maintenance‑free solution for IP cameras, VoIP phones, and wireless APs.
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 or lighting.
🔁 Watchdog Auto‑Recovery (Ports 1–24)
Continuously monitors data communication status on all 24 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 1–24 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 1–24 from each other (they only communicate with uplink ports 25–26), 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
12.8Gbps switching capacity, 9.5232Mpps throughput, and 1Mbit packet buffer.
All ports support non‑blocking wire‑speed forwarding (10/100Mbps on PoE ports, Gigabit on uplinks).
Store‑and‑forward architecture with full/half‑duplex flow control.
2K MAC address table for small to medium networks.
🔌 Flexible Connectivity & Easy Deployment
24× 10/100Base‑T PoE ports + 2× Gigabit uplink RJ45 + 2× Gigabit SFP slots (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.
⚡ 500W High‑Capacity Power Supply
Built‑in 500W power supply provides abundant power for all 24 PoE ports simultaneously, supporting up to 90W per port on ports 1–4 and 30W on ports 5–24. No need for external power bricks.
LT-AH2422GHV-B Hi-PoE++ Switch – FAQ
1. How many ports does this switch have and what are their speeds?
Answer: The switch provides 28 usable ports:
Ports 1–24: 10/100Mbps PoE ports (Fast Ethernet)
Ports 25–26: 10/100/1000Mbps uplink RJ45 ports (Gigabit)
Ports 27–28: 1000Mbps SFP fiber slots
All ports support non‑blocking wire‑speed forwarding.
2. What is the PoE power output on each port?
Answer:
Ports 1–4 support IEEE 802.3af/at/bt (PoE++), up to 90W each – ideal for high‑power devices like PTZ cameras, lighting, or Wi‑Fi 6 APs.
Ports 5–24 support IEEE 802.3af/at, up to 30W each.
The switch has a built‑in 500W power supply, providing ample power for all ports simultaneously.
3. Does the switch support intelligent PoE power priority management?
Answer: Yes. When the remaining power capacity is low, the switch automatically prioritises high‑priority ports to prevent overload. This ensures critical devices (e.g., main cameras) keep running.
4. How does the Watchdog function work?
Answer: Watchdog is enabled on ports 1–24. It continuously monitors data communication of connected devices. If a device (such as an IP camera) stops working for 2 minutes, the corresponding port will automatically restart to recover the device – no manual maintenance required.
5. How far does Long‑Range mode reach? How do I enable it?
Answer: Turn on the "Long Range" DIP switch on the device. Ports 1–24 will reduce speed to 10Mbps but can transmit PoE and data up to 250 meters over Cat5e/Cat6 cable. Perfect for large surveillance sites or older cabling.
6. What does VLAN mode do?
Answer: When VLAN mode is enabled (often together with Long Range), ports 1–24 are isolated from each other – they cannot directly communicate with one another, but they can all reach uplink ports 25–26. This reduces broadcast storms, prevents DHCP conflicts, and improves network security and bandwidth efficiency for CCTV systems.
7. What protection features are built into the switch?
Answer: The switch includes multiple protections:
6KV surge/lightning protection (both PoE ports and power supply)
OVP (Over Voltage Protection)
Short‑circuit protection
Overload protection
These ensure safe, reliable operation even in outdoor or industrial environments.
8. Do I need to configure the switch?
Answer: No. It is plug‑and‑play – unmanaged. Simply connect power and network cables. The DIP switches provide easy extended functions (Long Range / VLAN). No command line or web login required.
9. What are the operating temperature and installation options?
Answer:
Operating temperature: 0°C ~ 55°C (32°F ~ 131°F)
Storage temperature: -40°C ~ 70°C (-40°F ~ 158°F)
Housing: galvanized steel, fanless silent design, excellent heat dissipation
includes rack‑mount ears.
10. What kind of SFP modules can I use in the SFP slots?
Answer: The SFP slots support 1000Mbps standard SFP modules (fiber uplink). Transmission distance depends on the module – options include 20km, 40km, 100km, and more.
11. What applications is this PoE switch best for?
Answer: Ideal for:
Large‑scale IP surveillance systems (especially PTZ cameras requiring 90W PoE++)
Wi‑Fi AP deployments (including Wi‑Fi 6)
VoIP phone networks
Enterprise networks, schools, hotels, warehouses, factories – any scenario needing up to 24 PoE ports with long‑range transmission and a high‑capacity 500W power supply.
12. What is the ordering information for the LT-AH2422GHV-B?
Answer:
Model: LT-AH2422GHV-B
Description: Hybrid PoE switch with 24× Fast Ethernet PoE ports (ports 1–4: 90W bt, ports 5–24: 30W af/at), 2× Gigabit uplink RJ45 ports, 2× Gigabit SFP slots, built‑in 500W power supply. Supports watchdog, 250m long range, VLAN, 6KV surge, OVP, and short‑circuit protection.
Unit: pc