User's Manual
6 
z  Hold “+” button [B8] for 3 seconds to select the unit for barometric 
pressure meter in hPa, inHg or mmHG.   
7.4 Barometric Pressure Bar Graph 
The Barometric Pressure Reading at 0hr, –2hr,-4hr,-8hr,-12hr is recorded 
and shown on Barometric Pressure Bar Graph [A3]. The Graph is 
displayed in both hPa and inHg 
8. Thermometer 
8.1 RF Transmission Procedure: 
z  The main unit automatically starts receiving transmission from 
outdoor thermo sensor for outdoor temperature after weather 
condition setting. 
z  The thermo sensor unit will automatically transmit temperature 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 (D8) is at the back of 
the thermo sensor.   
z  If main unit failed to receive transmission from outdoor thermo 
sensor in first 3 minutes after the batteries inserted (“- - . –”display on 
the LCD), hold “Channel” button (B6) for 3 seconds to receive 
transmission manually. RF icon “ ” flashes on the LCD 
Note: “WEATHER/HISTROY” (B7), “+/C/F” (B8), “-/MAX/MIN“(B9), 
“ABSOLUTE/RELATIVE” (B10) buttons will not function while scanning for 
thermo sensor’s signal unless they are well received or stopped 
manually. 
8.2 Temperature & Humidity 
(1) Outdoor Temperature--- Channel Selection 
z  Press “CHANNEL” button (B6) to view the 3 Channels’ temperature & 
humidity. The sequence is shown as follow: 
PRESS “CHANNEL” button  PRESS “CHANNEL” button PRESS “CHANNEL” 
button 
  0 HR = Current Barometric Pressure Reading 
  -1HR = Barometric Pressure Reading in 1 hour ago 
  -2HR = Barometric Pressure Reading in 2 hour 
ago ……..etc 










