Danfoss RET B + RF User & Installation Instructions Manual page 11

RET B-LS model only
This model is fi tted with an Auto/Off switch.
When the switch is set in "I" position the thermostat
controls at the temperature set by the setting dial.
When set to "O" the thermostat output is turned off
and "Of" is displayed.
RET B-NSB model only
This model is fi tted with a "Day"/Night switch.
When the switch is set to the "Sun Symbol", the
thermostat controls at the temperature set by the
setting dial.
When set to the "Moon symbol", the thermostat controls at
4°C below the temperature set by the setting dial.
NOTE: if used to control cooling, thermostat controls 4°C
higher, with switch in MOON position
11