Features:
The RS232 to RS232 photo isolator box allows the input signals to be completely prevent up to 1000V. There are 3 LED indicators correspond to Tx, Rx and power signals. A 9V, 500mA power indicator adapter is provided in the package.
There are one male and one female connectors in the box, the signal assignment are shown in the manual.

Features:
The RS232 to RS422 photo isolator box allows the input signals to be completely prevent up to 1000V. There are 3 LED indicators correspond to Tx, Rx and power signals. A 9V, 500mA power indicator adapter is provided in the package.
There are one RS422 male connector and one RS232 female connectors in the box, the signal assignment are shown in the manual.

Features:
Standard ISA RS 232 asynchronous communication protocol.
Each repeater extends up to 300 ft. communicatin distance.
Several repeaters can be coonected for a long distance purpose.
AC power supported for 110v / 220v selectable.
LED indicate when repeater is operating.
LED indicates when power is normal mode.

Features:
RS 232 to RS 422 to RS 232 converter.
Asynchronous communication protocol.
Each converter extends up to 3000 ft. communication distance.
Standard EIA RS 232 / EIA RS 422 interface.
AC power supported for 110v / 220v selectable.
LED indicate when repeater is operating.
LED indicates when power is normal mode.

Features:
RS 232 to RS 422 to RS 232 converter.
Passive or active current loop selectablel.
One dB-25 Male RS 232 connector.
Terminal block commector for long haul cable.
AC power supported for 110v / 220v selectable.
DCE, DTE, or loopback selectable.
4 wire full duplex or 2 wire half duplex selectable.
Using DC 9V external power or supported by pin 9 of RS 232C.
One pair (two converters)is needed for two connected devices.
20 mA or 60mA selectable.
Compact size.

Features:
Provides RS 232 or RS 422 signal.
Provides DTE or DCE mode signal.
One pair (two converters) is needed for two connected devices.
Communication distance up to 1500m.
Communication speed up to 5Mbps.
Operation Temperature from 0°C to 55°C.
ST type fiber optical connector.
Suitable for threedifferent optical fibers size:50/125um, 62.5/125um, 100/140um.
Suitable for multi-mode cable.
HFBR-2416 fiber receiver and HFBR-1414 fiber optical transmitter are used .

Features:
RS 232, RS 422, and RS 485 surge protector.
Provides up to 250 current (A) protection.
Provides voltage protection.
Operating temperature:- 40 degree Celsius~+85 degree Celsius.
Operating temperature up to 26 volts DC.
Storage temperature :-50 degree~+125 degree Celsius.

Features:
Provides 6 expansion slots for 8 port and 16 bits interface cards.
All signal lines and power line are isolated to protect motherboard.
Automatic cut off the power on the expansion module when abnormal.
Protect motherboard from the damage of faulty interface cards and hardware errors during testing.
Protects against short circuit ot interface cards..
Provides 6 power indicators and current limit fuse.
Remove or insert the interface cards without turning off the PC power.
No need to open the computer case to remove or insert the interface cards.
PC 386/486 , Pentium hardware compatibles.