Latch recommends using a PoE++ switch that supports the 802.3bt standard which ensures that 50W are available at each port. Latch does not recommend directly using PoE switches with less than 50W per port with the intercom. If a PoE switch with less than 50W per port is being used, then PoE should be disabled for the port or the connection should be moved.
Detailed specifications around PoE / connecting the intercom by ethernet are as follows:
- Ethernet switch that has no PoE ports / Using DC power (2-wire)
- Amperage is 4A @ 12V or 2A @ 24V
- Latch recommends using 24V instead of 12V whenever possible. If the installer is only able to use 12V, they must ensure the wire length and gauge is correct per the chart below
- The power supply must be a Class 2 Isolated, UL Listed DC Power Supply
- Ethernet switch with PoE ports
- Ethernet switch must be a PoE++ switch that supports the 802.3bt IEEE standard. This will ensure that 50W is available at each port.
- Example: this Netgear GS516UP that has eight PoE++ ports
- If a PoE switch with less than 50W per port is being used, then PoE should be disabled for the port or the connection should be moved.
- Intercom should NOT be connected to any PoE-enabled port other than a dedicated PoE injector. If connecting to a PoE port not an injector, see below bullets for detailed specifications.
- Switch with multiple configurations / combination camera + intercom setups
- Using PoE power and 2-wire concurrently
- Do not use PoE and 2-wire concurrently
- Switch that has some PoE ports and some non-PoE ports
- A camera and an intercom could be connected to the same PoE switch but with each port configured with different settings. For example, a camera could be connected to a switch port with 802.3at power (<50W available) with the intercom on a port that satisfies the 50W power requirement
- Switch that has different types of PoE ports (some PoE+ ports and some PoE++ ports)
- Camera could be connected to a switch port with 802.3at power (<50W available) with the intercom on a 802.3bt power (>50W available) PoE++ port
- Switch that has all PoE ports but has SW control to disable PoE per port
- Very important for installer to disable PoE for Intercom’s port to ensure they don’t end up with an under-rated PoE source
The network must provide at least 2Mbps download and upload speeds for the intercom to function properly. The intercom can connect to a WPA or WPA2 WiFi network. Currently the intercom does not support connecting to hidden WiFi networks or WiFi networks that provides network access only after a accepting terms & conditions via a browser (like how guests get access to WiFi networks in hotels or airport).