Looks like your panel needs a firmware update for that option. According to ADC it will require 2.5.3+ for the VDB770. Your panel is at 2.5.2
Firmware update instructions are found here:
Looks like your panel needs a firmware update for that option. According to ADC it will require 2.5.3+ for the VDB770. Your panel is at 2.5.2
Firmware update instructions are found here: