Wireless temperature controller with display pure white glossy for single mounting 80x80x22mm or mounting into the E-Design55 switching system. With solar cell and battery (lifetime 3-5 years). Smart Home sensor. Alternatively, the device can be powered by a 12V DC switching power supply unit SNT61-12V/6W fitted in a flush-mounted box behind the sensor. If the connecting cable is not needed, it can be cut off. This means the sensor requires no installation depth behind the mounting plate. It can be screwed to any flat surface. We recommend stainless-steel countersunk screws 2.9x25mm, DIN 7982 C, for screw connections. Both with rawl plugs 5x25mm and with 55mm switch boxes. Set of 2 stainless-steel countersunk screws 2,9x25mm and plugs 5x25mm are enclosed. The sensor sends a message every 100 seconds to the Eltako wireless network at an actual temperature change of minimum 0.3°C. The bistable display is updated. A change in reference temperature is sent immediately. The display is updated. If there is no change, a status report is sent every 17 minutes. Measurement accuracy is approx. 1°C. Installation: Screw on the holding plate including its electronics. Then snap on the frame, remove the battery insulation, and mount the cover panel together with the display and solar cells. Normal display: The upper display shows the day reference temperature presetting of 20°C in small characters preceded by a d (=day). The lower display shows the actual temperature in large characters, e.g. 21.5°C. Adjust the day reference temperature from +8°C to +40°C in steps of 0.5°C by pressing the triangle up and triangle down keys. Several key operations are accumulated. The new reference temperature appears in the display in large digits after approx. 2 second. After a further approx. 6 seconds, the display returns to normal mode. Night reduction can also be activated and adjusted by pressing the triangle up and triangle down keys. Activation is by pressing both keys simultaneously and briefly. The top of the display shows the night reference temperature in small digits preceded by n (= night). The presetting is a value which is 4°C lower than the day reference temperature. Terminate the night reduction function by briefly pressing the two keys simultaneously. The temperature reduction value can be changed in steps of 1°C by pressing the triangle up and triangle down keys as long as the night reduction function is activated. Here too, several key operations are accumulated. The new temperature reduction value is shown in the display in large digits after approx. 2 seconds. After a further approx. 6 seconds, the display returns to night reduction mode. Terminate the night reduction function by briefly pressing the two keys simultaneously. The wireless sensor can be taught in the actuators listed below and in the Wireless Building Visualisation and Control Software: FAE14, FHK14, F4HK14, F2L14, FHK61, FME14.