Ea2 BL502 User Manual - page 10

6. Thermometer

6.1 RF Transmission Procedure:

  •  The main unit automatically starts receiving transmission from outdoor thermo sensor  

for outdoor temperature after batteries are inserted. 

 •  The thermo sensor unit will automatically transmit temperature signal to the main unit  

after batteries inserted. 

 •  For having more than one external transmitter (Maximum3), select the Channel, CH1,  

CH2 or CH3 to ensure each sensor is transmitting difference channel before inserting  

batteries. The channel select switch (D3) is at the back of the thermo sensor. 

 •  Press “TX “button (D4) on the thermo sensor unit to transmit temperatures signal to  

the weather station manually. The weather station gives a “beep” sound if it received  

the temperature.

Note: Buttons (except “Light” button (B2)) will not function while scanning for thermo 

sensor’s signal unless they are well received or stopped manually.

6.2 Temperature & Humidity:

(1) Outdoor Temperature--- Channel Selection

 •  Press “CHANNEL” button (B8) to view the 3 Channel’s temperature. The sequence is  

shown as follow:

PRESS “CHANNEL” button      >      PRESS “CHANNEL” button      >       PRESS “CHANNEL” button

 •  Hold “CHANNEL” button for 3 seconds to cancel unused channel manually. It will  

automatically register a new channel again if a new channel is received.

(2) Outdoor Temperature Trend

 •  The trend pointer (A5) displayed on the LCD indicates the trend of the outdoor  

temperature. 

(3) Celsius / Fahrenheit

 •  Press “°C /°F” button (B4) to select Indoor/Outdoor Temperature in Celsius mode or  

Fahrenheit mode. 

 •  If the temperature is out of the measurable range, LL.L (beyond the minimum   

temperature) or HH.H (beyond the maximum temperature) will be shown on the LCD.

Display the three 

channels alternatively

Indicating the outdoor 

temp. is rising

Indicating the outdoor 

temp. is steady

Indicating the outdoor 

temp. is falling

ENGLISH   5

ENGLISH   6

4. Getting Started

4.1 Main Unit:

 •  Slide open main unit battery compartment cover [C2]

 •  Insert 3 x AAA batteries observing polarity [“ +” and “ –“ marks]

 •  Replace main unit battery compartment cover [C2]

 •  Use a pin to press the RESET [B9] button on the rear of the main unit, the main unit is  

now ready for use

4.2 Outdoor Thermo Sensor

 •  Batteries compartment (D5) of thermo sensor is locating behind the back cover,  

unscrews the batteries cover to open.

 •  Insert 2 x AAA batteries observing polarity [ “+” and “–“ marks]

5. Installation

5.1 Main Unit

The main unit can be placed onto any flat surface (C3), or wall mounted by the hanging 

hole (C1) at the back of the unit. 

5.2 Outdoor Thermo sensor

The remote sensor should be securely mounted onto a horizontal surface. 

Note:Transmissions between receiver and transmitter can reach up to 30m in open area.     

Open Area: there are no interfering obstacles such as buildings, trees, vehicles, high 

voltage lines, etc.