SUTRON CORPORATION RealTime Data from anywhere to everywhere

SUTRON CORPORATION Real-Time Data from anywhere to everywhere New products and enhancements in the field of Data Collection & the next generation telemetry products Sutron is an ISO 9001: 2008 Certified Company

Sutron New Product Highlights

8310 Remote Data Logger and Telemetry • Designed as an 8210 Replacement • NEMA and non-NEMA versions • Simple Front panel setup without PC or menu setup using PC. • Built-in measurement circuitry to handle sensors commonly used. • Flexible measurement schedules and logging schemes. • Built-in BASIC to support custom measurements, processing and communications. • Built-in support for GOES, Iridium, GPRS, and telephone modems including speech.

8310 Features – Every thing you need built-in • 8 analog inputs – 16 bit A/D, 0. 002% accuracy • 4 counter/frequency inputs – 0. 01% accuracy • SDI-12 – dual connections. • SD card for data retrieval or setup. • Built-in solar panel regulator. • Removable terminal strips. • -40 C to +60 C operation • Optional GPRS, IRIDIUM, SATLINK – dual coms • Ethernet built-in

Satlink V 2 • Production units ready May 2011 • Key improvements: • Run 30 days without GPS. • Antenna pointing calculator • Supports all new satellite channels • with lower power requirements • Automatic setting of power based on antenna type and satellite

Dome Antenna • >6 d. B gain, 60 deg HPBW • Stainless steel design with UV resistant dome • Easy to use mounting bracket with angle markings. • Release – July 2011

SDI Link • Up to 1 mile range • Built-in solar regulator • One master – many slaves • Supports SDI without gimmicks • Optional Analog/Digital I/O for direct sensor measurements • NEMA 4 X enclosure

Dual Orifice Bubbler -- DOB §Key Features §All-in-one design with display, SD, desiccant, log, SDI-12 §Accubar accuracy – dual sensors §Auto purges §Great diagnostics §Applications: §Multiple channels §Upstream/downstream §Redundancy §Expanded range §Density version for steams with sediment and tidal areas §New: fasttrack mode, flow computation and line length error

Total Precipitation Gauge -- TPG • 36” capacity • SDI-12/RS 232 • 1 and 3 cell versions • 0. 001” resolution • Installs on 4. 5” OD pipe • Simple calibration using weights • Internal temperature and battery measurements • Cast aluminum base • UV resistant housing. • 8” aluminum opening

Sutron Capabilities Sutron Communications New Sutron Products • Xpert/Xlite Data Loggers • Goes Satellite (V 2 Cert. ) • Iridium Satellite • 8310 Series • GPRS/GSM Cell Modems • Wireless SDI-Link • Total Precipitation Gauge • Ethernet • Constant Flow Bubbler • Land Line Modem • LOS Radio • Dual Orifice bubbler • Web Hosting

Iridium Satellite Network Overview • Global coverage • Requires only one gateway, ISBD-1 but can support many (Scalable) • System comprises three principal components: – Satellite network – Ground network – Iridium subscriber products

Iridium Constellation Coverage • 6 Planes polar orbits • 11 Satellites / plane • 66 Satellites total • Complete Global Coverage • 48 Spot Beams / SV ~250 mile diameter per beam ~2800 mile diameter SV footprint Ground Infrastructure • Commercial gateway Tempe, Arizona • Backup facilities in Chandler, Arizona • Redundant Gateway in Fairbanks AK • Backup facilities in Chandler, Arizona • Do. D gateway in Hawaii

Satellite Network Operations Center - SNOC Main facility in Leesburg, VA Back-up facility in Chandler, AZ All satellite operations support

2008 Traffic Iridium SBD Data 10/16/2021 Commercial Short-Burst Data Traffic – Jan 2008 Iridium Proprietary and Confidential 14

2009 Traffic Iridium SBD Data 10/16/2021 Commercial Short-Burst Data Traffic – Jan 2009 Iridium Proprietary and Confidential 15

Iridium/GPRS hardware ISBD-1 -O GPRS-1

Short Burst Data Architecture Overview 17

Real- Time Communications Iridium Modem An Iridium Short Burst Data Transceiver operates on the iridium network to provide two way communications with remote stations. Features: • 70% smaller then the Satlink 2 Transmitter • 70% lighter then the GOES transmitter • 50% half the cost of a GOES transmitter • Simple RS-232 interface Data Loggers • Uniform global latency (less than 1 minute) • Coverage in areas not served by cellular • Ideal for Ground Water, 2 -way, Flood Warning, Alert applications • Communications costs as less as $22. 00 per month

How Sutron Iridium works for USGS? • Can easily with easily Interface with existing loggers • Provides 2 -way Communications capabilities • Higher throughput – allows transmission of camera images • Low power and lower acquisition costs • Messages transmitted look exactly like GOES msgs to accommodate existing USGS & USACE LRGS/DECODES ground stations • Used as redundant/back-up comms for Critical

Thank you very much! Any questions?