H-424MS Spread Spectrum SDI-12 Radio Bridge
The WaterLOG® H-424MS is a spread spectrum SDI-12 radio bridge. Each unit contains a microprocessor control board and a spread spectrum telemetry radio. Spread spectrum technology is highly secure and has good interference immunity. The radio operates in the license-free 900 MHz ISM Band eliminating the need for any FCC licensing.
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|Type||Transparent SDI-12. Works with all SDI-12 commands including extended and V1.2 Commands|
|Requirements||Data logger must support mulitple (3/3) SDI-12 breaks with retries.|
|Radio||Frequency Range||902.5 to 927.5 MHZ|
|Line of Site||5 plus miles - depending on antenna and site conditions.|
|RF Connector||Reverse Type - TNC|
|Transmission Power||500 mW (=27dBm)|
|Receive Sensitivity||-100 dBm|
|Protocal||SDI-12, 7-bit even parity, 1 stop bit|
|Output Voltage Levels||Minimum high level||3.5 Volts|
|Maximum low level||0.8 Volts|
|Physical||Enclosure||Fiberglass, NEMA 4|
|Size||8 in. x 6 in. with hinged screw cover|
|Connectors||H-424||Switchcraft EN3P4M (4-pin female)|
|Mate||Switchcraft EN3C4F (4-pin female)|
|Power||Input Voltage (ASI only)||9.6 to 18.0 Volts DC|
|Power Control||Remote station uses programmable sleep/wake up to detect carrier.|
|Average with Power Control||Less than 2.0 mA|
|Temperature||Operating||-40 to + 60 C|
|Storage||-50 to +70 C|
|Humidity||0 to 100%|
|Warranty||The WaterLOG® H-424MS is warranted against defects in materials and workmanship for two years from date of shipment.|
|Specifications subject to change without prior notice due to ongoing commitment to product testing and improvement. LR February 25, 2011 D11 0211.|