Thermometer that continuously displays the indoor temperature of the outside temperature thanks to its outdoor sensor by pressing the button on the device. Very playable but not backlight Please read the operating instructions for the order of creation or battery replacement. 2 AA batteries (LR06) for the receiver and two AAA (LR03) for external transmitter. Very precise and accurate compared to two reference thermometers, +/- 0.1 ° C difference. The "refresh" the information to the receiver takes place every 27.5 seconds !!! Is indicated on the packaging 2 years of battery life ... to see. Distance between transmitter and receiver, 80m manufacturer data. Value readability / Quality / Price very good. Available in white, I think.
