User`s guide
The status LED indicator on the front of the radio modem should be showing 1 
short pulse every 2 seconds (approximately). This indicates the radio modem is 
in standby mode. The receive LED indicator (green) will also be flashing 
regularly indicating it is listening for radio transmissions. 
Sending Serial Data 
Assuming both radio modems are connected and operating correctly, you are 
now ready to send some data. Ensure the two radio modems are spaced with 
at least 5 or more metres between them. 
Entering keystrokes in the communications application on one computer should 
result in those characters appearing in the communications application on the 
remote computer. 
Front Panel Indicator Lights 
The radio modem has 3 indicator LEDs on the front panel. These LEDs are used to 
give the radio modem operator an indication of the current state of operation of the 
Radio Modem. 
Indicator 
State 
Meaning 
RX/TX 
Red 
Radio transmitting. 
RX/TX 
Green steady 
Link established and listening for data. 
RX/TX 
Green flash 
Radio in standby mode waiting to establish a link. 
RX Data 
Red 
Radio receiving data. 
Status 
Single pulsing 
Radio Modem is active but no link is established. 
Status 
Double pulsing 
A link to a Remote device has been established 
Status 
On/Off (0.5 sec) 
Attempting to connect to a remote Radio Modem. 
Status 
On/Off (2 secs) 
Low battery indication. (Two second flash rate) 
Status 
On 
Radio Modem is in setup and configuration mode. 
 Mounting the Radio Modem 
Each radio modem is supplied with two lengths of adhesive backed Velcro. This 
Velcro can be used to mount the radio modem on a wall, window, carpet covered 
divider, or onto anything the hooked Velcro itself, or the Velcro adhesive will adhere to. 
User’s Guide    Installation 2-3 










