How to Use the Lighthouse Wireless Thermostat
The sensor unit requires 2 x AA batteries (not included). Always put the batteries into the sensor unit and program it before plugging in the remote switch. The display will automatically switch off to preserve battery power after no buttons have been pressed for approximately 10 seconds. Pressing any button will turn the display back on again.
There are four buttons marked "M", "OK", "+" and "-". Pressing the "M" key for 3 seconds begins the basic programming process. The "+" an "-" buttons alter the current setting and the "OK" button confirms the setting
To set the time and the temperature scale (°C or °F), press any button to bring the display up and then press and hold the "M" button for 3 seconds. The display will flash the 12hr or 24hr clock type setting. Pressing the "+" or "-" buttons toggles the display between "12hr" and "24hr". When it displays the type of clock you prefer press the "OK" button to confirm the selection.
The display will now flash the day. Use the "+" and "-" buttons to cycle through the days until the current one is displayed. Press the "OK" button to confirm the selection.
The Hour part of the time will now flash. Use the "+" and "-" buttons to change the Hour part of the time. If you have selected the 12-hour clock, then by going past 12 will toggle the am/pm on the display. Press "OK" when the correct hour and am/pm is displayed.
Next, the Minutes part of the time will flash. Use the "+" and "-" buttons to select the correct minutes. Press "OK" when done.
Next BST (British Summertime) can be selected. Use the "+" and "-" buttons to switch this on or off. Press "OK" when done.
Next select between the temperature scales ”C and °F. Press "OK" when done.
The basic options of the unit are now set.
Next set whether the switch turns on when the temperature goes above the set value (this is "HEAT" mode indicated by an icon with 3 wavey lines), or on when the temperature goes below the set level (this is "COOL" mode indicated by a fan icon). To do this press and hold the "OK" button for 3 seconds. The unit can be toggled between HEAT mode and COOL mode.
To toggle through the override setting, press the "OK" button but do not hold it down, if the wavey line or fan icon is displayed then this means the unit is being temperature controlled. When neither of the icons are displayed then the switch will be either constantly ON or constantly OFF as indicated on the bottom part of the display.
The switching temperature is easily set or changed by just using the "+" or "-" buttons.