What do you do when the cable doesn't reach?
SDI-12 is a serial protocol used in dataloggers and environmental instruments. It is simple and reliable, but cables are limited to 200 feet. The ProLink Radio allows SDI-12 communication across greater distances.
Each ProLink contains a 900 MHz radio module, transmitting at 1000 milliwatts. This is the maximum power allowed without a license. Range up to 32 km, line-of-sight.
No setup is required. The ProLink is a drop-in cable replacement, and will work with all loggers and instruments that comply with the SDI-12 protocol version 1.3.
ProLinks are shipped as dedicated pairs for point-to-point applications. Other topologies are possible, including star-networks. At any point in the network, a single ProLink can transmit and receive commands to any number of SDI-12 instruments.
ProLinks will transmit and receive all SDI-12 commands. Each ProLink can also be polled as an independent SDI-12 instrument, measuring battery voltage, internal temperature, and RSSI (signal strength).
An optional power-save feature allows the ProLinks to sleep between SDI-12 polls. This reduces power consumption and extends battery life.
|Frequency band, modulation||902-928 MHz, FHSS (USA);
915-928 MHz, FHSS (Australia)
|Dimensions||4.4 x 2.7 x 1.4 inches (111 x 69 x 36 mm)|
|Weight||6 oz (170 g)|
|Antenna||RP-SMA jack (female). Antenna provided|
|SDI-12 interface||Pluggable screw terminal (12-volt, ground, SDI-12 data)|
|Configuration interface||Serial RS232 DB9 male connector, null-modem|
|Maximum RF output power||1000 mW|
|Transmission range||Up to 1500 feet (450 m) indoors;
Up to 20 miles (32 km) line-of-sight
|Supply voltage||7-18 volts DC, 12 volts nominal|
|Current draw (@ 12V)||400 mA transmit mode;
40 mA receive mode;
8 mA sleep (passive mode)
Operating temperature -40° to +80° C;
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