Pilot Plants
PLCs PLC Training Books Remote Modules Voice Modules
Position Transducers
Wireless Modem Power Supplies Operator Panels Scadas
Who are we?
Our customers
How to order
Contact Us
Latin-Tech Inc.
    PH: 305 848 3517  8004 NW 154ST #621  Miami Lakes, FL 33016 USA.



Replace the physical wiring between two devices that use RS 232 serial port.

  • No radio license needed
  • No Software needed
  • Point or Multipoint capability
  • User programmable/configurable thru hyperterminal
  • Sopports from 1200 up to 115.2 Kbps
  • 2.4 GHZ ISM band
  • Blue tooth Version 1.2
  • Input power 5-12 VDC e 110 mA
  • Operating Temp: 20-75 C
  • 35 mm x 65 mm x 16 mm
  • RS232 connector
  • Output power +20 dBm (100mW)
  • 100 to 1000 mt ( line of sight)
Multipoint Configuration LTPU-120
Bar code reader  
Device N  

Ideal for SCADAS or control equipment.

Two Multipoint options

USB Radiomodem Up to 7 external devices

Serial Radiomodem Up to N external devices

Save money .
    Get rid of expensive wiring!  
Instant Wiring connectivity.


Wireless MODEM (900 Mhz or 2.4 Ghz)

Complete RTUs below US 1000!!!

Do you need to communicate with your devices, and physical wiring is not an option?

With this new Spread Spectrum Wireless Modem, is now possible, without having to expend too much.


And the best thing is you can place this modem almost anywhere.

It's so small that you can compare it with the size of a credit card !!

The cheapest RTU system
Now you can have this very low cost RTU system using our FMD - Series PLCs and our wireless modem.
US 318 ----+ ----US 380----= US 698 US 384 ----+ ----US 380----= US 764
+ +
6 Analog input
2 Analog output
8 Digital input
8 Digital output
4 Analog input
2 Analog output
16 Digital input
16 Digital output
....and many more powerful systems!!
DatraxRF Radio MODEM
Meet the wireless modem with the best sensitivity (transmission range to power ratio) in the industry plus an incredibly low price. This compact data transceiver is perfect for applications needing high performance and dependable operation. The DatraxRF wireless modem transfers data at 9600 or 19200 baud up to 1/4 mile in a city environment or greater than 20 miles line-of-sight with a directional antenna. This modem is perfect for applications in supervisory control and data acquisition (SCADA), remote meter reading, home automation, security, instrument monitoring, point of sale systems (POS) and myriad other applications.
US 380.00
Download Data Sheet  
  • Best sensitivity in industry for extended transmission range.
  • Low power consumption. Suitable for battery powered applications.
  • Small size.
  • Low cost.
  • Easy to integrate. No knowledge of RF necessary. Simple networking protocol.
  • Standard RS-232 and RS-485 serial interface.
  • Reliable data transfer performance.
  • Choice of integral or separate external antennas.
  • FCC approved with no further licensing or approval required.
  • Exceeding Your Wireless Expectations


-Radio Frequency:           902-928 MHz or 2.4-2.5 GHz, unlicensed ISM 
-Type:                              Frequency Hopping Spread Spectrum Transceiver 
-Frequency Control:        Direct FM 
-Network Topology:         Point to multipoint, Point-to-point and Repeater 
-Channel Capacity:          65,535 Network Identifiers share 25 hop Channels 
-Data Interface:                Asynchronous Serial (RS-232 and RS-485) 
-Data Rate:                      1200 through 57,600 bps 
-On Air Data Rage:          1200, 9600 or 19,200 bps as specified 
-Rx Sensitivity:                -116 dBm (1200), -110 dBm (9600). -107 dBm (19.2) 
-Transmit Power:             Output 100 mW nominal 
-Control:                           AT Command Set 
-Interference Rejection:  -70 db at pager and cellular frequencies 
-Range Indoor:                600' to 1500 feet 
-Outdoor:                         7 mi. with dipole, >20 Mi. with gain antenna.

Range calculations are for 9600 baud radio, line-of-sight.  Actual
range will vary based upon specific board integration, antenna
selection and environment.
Power Requirements:

-Supply Voltage:               9 to 28 Volts DC 
-Current Consumption:      Tx 150 mA, Rx 50 mA, Power Down <10 ´┐ŻA 


Antenna Connector: MMCX Female. Rubber Duck Antenna or adaptor Antenna Impedance: cable to Type "N" connector required. 50 ohms unbalanced.
Success story- Wireless RTU
  Others products
DatraxRF Module (900 or 2.4 Mhz)
DB9 Serial Cable (DatraxRF to PC)
PS 9 Volt@400 mA Wall power supply
RD Half Wave Rubber Duck Antenna.

High Gain Antennas (for more distance)
Yogi Antenna, 12dB Gain
Omni Antenna, 6 dB Gain

MMCX to N Male Pigtail Connector
BH Bulkhead Connector (N male to N male)
20 - feet of low loss Coaxial Cable (highly recommended)
with N Connectors.        ANTENNA KIT

Development RTU Kits (one per customer)
Radio Modem Development Kit...................................
Includes: Two DatraxRF Modules (900 or 2400 Mhz),
Two interface boards with serial conversion, Power
regulator,Two DB9 serial cables, Two 9V@400mA
power suplies, Two rubber duck antennas, One user's

RTU 88-10+ and Radio Modem Development Kit.............
Includes: The Radio Modem Development Kit plus a
FMD88-10 +ISK, which includes a PLC with 8 analog
inputs, 8 digital inputs, 8 digital outputs, programing
software TL5.1 and cable.

RTU 1616-10+  and Radio Modem Development Kit..........
Includes: The Radio Modem Development Kit plus a
FMD1616-10+ISK, which includes a PLC with 4 analog
inputs, one 0-20mA output,16 digital inputs, 16 digital 
outputs, programing software TL5.1 and cable.
.....More configurations available!!

For any additional information please CONTACT US, let us know what you need!!