Oregon Scientific EW91 User Manual - Page 1

C8311A Size: A4 Indoor / Outdoor Thermometer with Ice Alert Model: EW91 USER MANUAL Thank you for your purchase of this Indoor / Outdoor Thermometer. Please read these instructions carefully and keep the manual well for future reference. The receiver unit has a clear display that shows the indoor temperature, the maximum & minimum temperature records in the past 24 hours as well as the outdoor temperature measured and transmitted from the remote sensors. It is able to receive and display readings from up to 3 remote sensors. The 433 MHz technology means no wire installation is required and you can place the sensor within 30m (100ft) from the main (indoor) unit. OVERVIEW RECEIVER 3 1 4 6 2 5 7 89 1.LCD display: • Displays the outdoor and indoor temperature records, the current channel and the low battery indicator. 2.Ice Alert indicator light: • Flashes when the outdoor temperature is between -2.0°C (28°F) and 3.0°C (37°F). 3.CHANNEL key: • Press it once to turn on the backlight for 5 seconds, and press it again to switch among Channel 1, 2 and 3. • Press it once to turn on the backlight for 5 seconds, and then press and hold it for 2 seconds to view the channels automatically. • When the channels are being shown automatically, press it to exit the automatic display mode. 4.MIN./MAX. key: • Press it once to turn on the backlight for 5 seconds, and then press it again to show the minimum and maximum temperature records in the past 24 hours. • Press and hold it for 3 seconds to delete the minimum and maximum temperature records. 5.°C/°F slide switch: • Slide it to switch between Celsius and Fahrenheit. 6.SENSOR key: • Press it once to search a sensor. • During the reception period, press and hold it for 3 seconds to stop the reception. 7.RESET key: • Press it to return all values to default values. • In case of malfunction, the unit may be required to reset. 8.BATTERY COMPARTMENT: • Accommodates 2 AAA size batteries. 9.BATTERY DOOR LCD DISPLAY 1 1. Signal indicator 2 2. Channel 3 3. Outdoor temperature 4 6 4. Low battery indicator 5. Min and Max temperature 5 6. °C & °F 7 7. Indoor temperature REMOTE SENSOR 1 2 3 4 56 1.LED indicator: • Flashes when the remote unit sensor a reading. 2.Wall-mounting holder: • Supports the sensor on the wall. 3.RESET key: • Press it to restart the sensor and return all values to default values. 4.CHANNEL slide switch: • Assign the sensor to channel 1, 2 or 3. 5.BATTERY COMPARTMENT: • Accommodates 2 AAA size batteries. 6.BATTERY DOOR RECEPTION OF SENSOR SIGNAL OPERATING THE TEMPERATURE STATION 1. Remove the battery door and insert 2 new AAA size batteries as per the polarity information marked on the battery compartment. 2. Press "RESET" key to restart the main unit. 3. Slide "°C/°F" switch to select between °C and °F. 4. Slide the battery door back on. 5. Press "CHANNEL" key to select the desired channel. Main unit is searching for the sensor(s) (the icon will be flashing) The sensor(s) cannot be found and "--.-" (Outdoor temperature Area) Sensor 1 has been found (the icon will be displayed, but won't flash) The sensor(s) cannot be found after operating the main unit for 15 minutes Note When the sensor signal is received, the icon " " will be displayed on the LCD. OPERATING THE SENSOR 1. Remove the battery door and slide the "CHANNEL" switch to CH 1. (When using additional sensors, make sure each sensor is assigned a different CHANNEL number. 2. IInsert 2 new AAA batteries, matching polarities (+/-). 3. Press the "RESET" key 4. Slide the battery door back on. Note • Place the sensor in location away from direct sunlight and rain. • Do not place the sensor more than 30 m (100 ft) from the main (indoor) unit. • Position the sensor so that it faces the main (indoor) unit, minimizing obstructions such as doors, walls, and furniture. • Place the sensor in a location with a clear view to the sky, away from metallic or electronic objects. • Position the sensor closer to the main unit during cold winter months as below-freezing temperatures may affect battery performance and signal transmission. Tip the transmission range may vary depending on many factors. You may need to experiment with various locations to get the best results. Standard Alkaline batteries contain significant amounts of water. Because of this they will freeze in low temperatures of approximately -12°C (10°F). Disposable Lithium batteries have a much lower threshold for temperature with an estimated freezing range of below -30°C (-22°F). Wireless ranges can be impacted by a variety of factors such as extremely cold temperatures. Extreme cold may temporarily reduce the effective range between the sensor and the base station. If the unit's performance fails due to low temperature, the unit will resume proper functioning as the temperature rises to within the normal temperature range (i.e. no permanent damage will occur to the unit due to low temperatures). USING THE BACKLIGHT FUNCTION In normal mode, press "CHANNEL" or "MIN./MAX." key once to activate the backlight for 5 seconds. SWITCHING BETWEEN ºC & ºF TEMPERATURE FORMATS Slide "ºC/ºF" switch to select between Celsius and Fahrenheit. VIEWING THE MINIMUM AND MAXIMUM TEMPERATURE RECORDS 1. In normal mode, press "MIN./MAX." key twice to show the minimum indoor & outdoor temperature records in the past 24 hours. 2. Press it again to show the maximum temperature records. 3. Press it again to exit. Note Press and hold it for 3 seconds to delete the minimum and maximum temperature records. MAX.temperature records MIN.temperature records USING ICE ALERT FUNCTION If the outdoor temperature range is -2.0ºC ~ 3.0ºC (28ºF ~ 37ºF), the Ice Alert indicator light will be turned on and flash. BATTERY REPLACEMENT If the low battery indicator " " displays beside the outdoor temperature, it means that the battery power of sensor is not enough, and you should replace with 2 AAA size batteries at once. While if the low battery indicator " " displays beside the indoor temperature, it indicates that you should replace batteries of the main unit with 2 new AAA size batteries. Low battery indicator Note Attention! Please dispose of the used unit or batteries in an ecologically safe manner. PLACEMENT OF MAIN UNIT AND SENSOR For the sensor, place the screw on the desired wall and hang the sensor by the recessed hole in the back of it or simply place it on the desktop. For the main unit, you can just place it on the table by itself.