Verified 2026-10-19

LP1502 default installer code and reset

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Default codes are for authorized installers. Change defaults at commissioning. No bypass or unauthorized-access instructions.

Mercury LP1502. Last verified 2026-10-19 against PLT-05244 A.7, pp. 9 and 18 §2.12.

Defaults Flag

username	admin
password	password (available for five minutes after DIP switch 1 is toggled; the switch is read on the fly with no reboot)
Default IP	192.168.0.251 / 255.255.0.0, gateway 192.168.0.1, port 3001

Reset

Set DIP 2 ON and power-cycle to restore factory network settings. Toggle DIP switch 1 to enable admin/password for five minutes. The switch is read on the fly with no reboot. Create an account, then set all DIPs OFF.

Lockout and firmware

Default login admin/password is available for five minutes after DIP switch 1 is toggled.

Questions

What is the default installer code for LP1502?

admin

How do I reset LP1502 to factory defaults?

Set DIP 2 ON and power-cycle to restore factory network settings. Toggle DIP switch 1 to enable admin/password for five minutes. The switch is read on the fly with no reboot. Create an account, then set all DIPs OFF.

What is the default IP?

192.168.0.251 / 255.255.0.0, gateway 192.168.0.1, port 3001

Why is my installer code not working?

Default login admin/password is available for five minutes after DIP switch 1 is toggled.

Source: PLT-05244 A.7, pp. 9 and 18 §2.12

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