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RS232
RADIO MODEM
This RS232 radio modem provides fast and reliable RF data communications
at an exceptionally competitive price. Whilst the RF modem is
simple to use it is also highly adaptable and can be used in a
wide variety of applications.
The modems can be configured for various operating modes to provide:
1. An ‘invisible’ RS232 point to point link, reproducing
the function of a half duplex RS232 cable.
2. A RS232 point to point link with data flow control to provide
data verification.
3. A functionality similar to that of a client/server network,
where each modem is assigned an address with a maximum of 255
clients per network and a maximum of 65535 networks.
The modem is supplied in a tough ABS enclosure, with wall mounting
lugs. The external 868MHz antenna offers a range of up to 600
metres line of sight. The modem is supplied with an RS232 cable
and requires only a 9-12Vdc power supply.
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The
RF modem is software configurable using the standard AT command
set.Commands can be entered via the RS232 port using a control device
with communications software (for example a PC with Windows HyperTerminal).
Using this method the modem can be set to the three different modes.
In transparent mode the modem provides an ‘invisible’
serial link and reproduces the function of a half duplex RS-232
cable.
Transparent secured mode operates in the same manner of transparent
mode and also provides data flow control to ensure the correctness
of transmitted data frames. This provides the user with a fully
data verified point to point communications link.
Addressed secured mode provides a functionality similar to
that of a client/server network except that there is no server and
all of the clients can communicate with each-other. Each modem is
given an address with a maximum of 255 clients per network and a
maximum of 65535 networks.
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Technical
Data
| Power
supply |
9
- 12 Volts @ 100 mAmps |
| Range |
Up
to 600 m (line of sight) |
| Frequency |
868
MHz |
| RF
Power |
0
- 7 dBm |
| Data
rate |
Selectable,
1200 bps - 38.4 Kbps |
| Enclosure
dimensions |
110mm
x 85mm x 35mm |
| OUR
PRICE: |
£149.99
EACH |
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£279.99
PAIR
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