You can reset the RPS-SP4L or RPS-SP8L unit to factory defaults by using a paper clip to depress the RESET button located right next to the TEL / LAN Indicator buttons. Press and hold the reset button until the units indicator lights flash and the unit will reboot. Note that once the unit is reset, the configuration values will go to 192.168.1.10, the default IP address. The user name and password will reset to admin. The phone password will return to 123456. Other data should remain unchanged. If you still have access to your unit, you can go into the UPDATE tab and download the remote power switches configuration prior to reset. After the reset, you can upload this file to return to your configuration.