Top 10 Questions to Ask Before Choosing a PoE Switch (A Practical Guide for Installers & Smart Buyers)

Brooklyn Low Voltage Supply

Understanding PoE and Why Your Switch Choice Matters

Selecting the right Power over Ethernet (PoE) switch is one of the most important decisions an installer or integrator makes when building a network for IP cameras, access control, VoIP systems, wireless access points, or automation devices.

At Brooklyn Low Voltage Supply, we see countless installations succeed-or fail—based on whether the switch was chosen correctly.

Whether you're installing IP cameras, access control, or WiFi networks, the PoE switch you choose affects system stability, device uptime, and long-term scalability. This guide combines pro-installer insight with consumer-friendly clarity-creating a buying roadmap you can trust.

Below are the top 10 questions every installer should ask before deciding which PoE switch to use.

Top 10 Questions to Ask Before Choosing a PoE Switch

1. What devices will the switch power?

Before choosing a switch, list every powered device. Different devices demand different wattage levels. Common PoE-powered devices include:

• IP Cameras (bullet, turret, PTZ)
• Access Control Panels
• Intercom Panels
• PoE Door Locks
• Wireless Access Points
• VoIP Phones
• NVRs with PoE Inputs

2. How much wattage do your devices need?

Compare device wattage requirements to ensure your switch can handle the load.

Device Type	Typical Wattage	Recommended PoE Standard
Basic IP Cameras	3-8W	PoE (802.3af)
PTZ Cameras	20-45W	PoE+ or PoE++
Door Controllers	10-30W	PoE+
Wireless APs	15-30W	PoE+
Intercom Panels	10–20W	PoE+

3. Do you need PoE, PoE+, or PoE++?

Understanding the differences between these standards is crucial for selecting the right switch.

Standard	Max Power	Best For
PoE (802.3af)	15.4W	Basic cameras & phones
PoE+ (802.3at)	30W	Access control & APs
PoE++ (802.3bt)	60–90W	PTZ & high-power devices

4. How many ports do you need?

Plan for Current and Future Needs

Installers rarely regret having more ports then needed.

The true regret is only having too few.

If you need 8 Ports for 8 Devices today, consider a 16-Port Switch.
If you need 12 Ports for 12 Devices today, consider a 24-Port Switch.

5. Do you need a Managed switch? Or an Unmanaged switch?

A Managed PoE Switch allows for more control than an Unmanaged Switch.
Managed switches offer features like VLANs, QoS, and remote monitoring—ideal for complex or large-scale installations.
Unmanaged switches work for simple, plug‑and‑play projects where advanced features aren't necessary.

Choose a Managed switch when you need :

• VLANs
• Remote Rebooting
• Power Cycling Per Port
• Traffic Monitoring
• Better Security

Choose an Unmanaged switch for simple plug‑and‑play projects where advanced features aren't necessary.

6. What data speed do your devices require?

Gigabit is recommended for all modern security and WiFi deployments. Avoid 10/100 Mbps switches unless you are installing legacy devices only such as legacy IP cameras, older VoIP phones, or basic access control panels that do not require high bandwidth.
For long term reliability and performance, Gigabit switches are the best choice for most installations.

7. What is the switch’s total PoE budget?

Even if each port supports PoE+, the total PoE budget may not support powering all ports simultaneously.

Always compare port wattage × number of devices to the switch’s total wattage.

Switch Type	Ports	Total PoE Budget
8-Port PoE+	8	120W
16-Port PoE+	16	240W
24-Port PoE+	24	370W

8. What form factor fits your installation?

Choose based on space, airflow, and environment:

• Rackmount: server/telecom rooms
• Wall‑mount: small or tight spaces
• Compact: residential or small business
• Industrial: warehouses or extreme temps

9. Does the switch include surge protection?

For Low Voltage Installers, this is huge.

Surge Protection safeguards against :

• Lightning Strikes
• Power Fluctuations
• Grounding Issues

Many Professional installers require built in surge protection on every project.
It is highly recommended for outdoor deployments and older buildings.

10. What warranty and support does it come with?

PoE Switches vary dramatically in after-sale support
Look for :

• Multi-Year Warranties
• Local Support
• Easy RMA Processes
• Telephone/Email Support

This matters when a switch goes down at 2 AM during a security outage.

Shop Professional-Grade PoE Switches

Explore PoE, PoE+, and PoE++ switches trusted by installers and integrators on BLVS.com Browse our curated selection to build powerful, reliable network systems.