M21 Tech Series are Weatherproof Data Radios
The Tech Series Data Radios have a Myriad of IO options and are Weatherproof.

And other frequency bands are available in Tech Series radios VHF, 220MHz, or 916MHz bands.
With its field-configurable I/O interface, the Tech Series can be configured for RS-232, RS-422, RS485, USB, GPIO, FIO or Analog interfaces in house or in the field as needed.
Most Tech Series Data Radios have 2-level FM data modems can run 4800 – 9600 baud very long range.
The mode inside this Tech Series Enclosure detects the type of front panel. Any time the panel is changed.
A GPS tracking system built with M7 transceivers, can track up to 20 radios with one-second updates or 200 with 10-seocond updated.
M21 General Features
- RS232standard. RS422, RS485, USB optional.
- Outstanding Range. 5-50 miles typical.
- Easy to use, that is fully programmable.
- Real-time streaming data or Packetized operation – user configurable.
- Each modem is store-and-forward repeater capable.
- The IO front panel, it has a Mariad of IO pabbel options.
- Sophisticated built-in diagnostics AND remote diagnostics. Monitored: DC voltage, Current, and temperature
- GPS tracking capability.
- Low-power modes for extended operation off of batteries or solar power.
- Programmable serial port baud rates, and flow-control.
- Automatic error correction
- Built-in automatic status monitoring of modem performance and DC input voltage.
- Compatible with MODBUS and DNP-3 communication.
M7 Weatherproof Data Radio

M7 General Features
- Integrated radio and modem
- Programmable 1/2 to 5 watts RF output.
- High throughput. 19200 bps in a 25kHz channel, 9600 bps in a 12.5kHz channel.
- Very Small size: 4.60” X 2.60” X .956 (11.7cm X 6.6cm X 2.43cm)
- Very Low Power (<80mA in RX mode)
- RS232standard. RS422/485 optional.
- Outstanding Range. 5-50 miles typical.
- Easy to use, yet fully programmable.
- Real-time streaming data or Packetized operation – user configurable.
- Each modem is store-and-forward repeater capable.
- Standard Carrier-sense channel access or TDMA, user selectable.
- Sophisticated built-in diagnostics AND remote diagnostics. Monitored: DC voltage, Current, and temperature
- 32 bit CPU with base-band Digital Signal Processing for exceptional sensitivity
- Low-power modes for extended operation off of batteries or solar power.
- Programmable serial port baud rates, and flow-control.
- Built-in automatic status monitoring of modem performance and DC input voltage.
The Data Sheet for all Products are in this Data Sheet Website.