Recommended Configuration - Openpath ACU-4W Installation Manual

● TCP port 80
● TCP port 8883
● UDP port 123
NOTE:​ If using an external DNS server, outbound UDP port 53 must also be open.
To support Wi-Fi unlocking from the mobile app, inbound TCP port 443 must be available from
within the LAN. Inbound port forwarding on the router, firewall, or NAT device is not required.
SELECTING A BACKUP BATTERY
While not required, Openpath recommends having a backup battery in the case of power outages.
The size of battery depends on your setup and how long you want to power the system.
Assuming a 12V power supply, a Smart Hub ACU configured with four Openpath readers and
locking hardware uses 4 Amps per hour. To keep the system running for 3 hours with all entries
engaged, you'd need a 12V 12A sealed lead acid (SLA) battery.
RECOMMENDED CONFIGURATION
Openpath readers and ACUs communicate via RS-485. The following wire types are compatible,
listed in the order of preference which impacts distance.
● Shielded CAT6A (recommended, additional two pairs can be used for sensors)
● Shielded CAT6
● Shielded RS485 w/22-24AWG (lower gauge, thicker wire is better)
● Shielded CAT5
● Unshielded CAT6
● Unshielded CAT5
● Shielded 22/6
● Unshielded 22/6
Version 1.2
Table 1:​ Power requirements (12V)
Smart Hub ACU 1A
Smart Reader 0.25A
Locking hardware 0.25A – 0.5A
(while engaged)
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Openpath 2018
CONFIDENTIAL