20 Channel EM-411 SiRF III GPS Receiver with Antenna

GlobalSat 20 Channel EM-411 SiRF III GPS Receiver with Antenna
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Modèle : EM411
Fabricant : GlobalSat
Évaluation : Aucune évaluation


20 Channel EM-411 SiRF III GPS Receiver with Antenna

The GlobalSat EM-411 GPS module is based on the popular SiRF Star III chipset. This tiny integrated package includes on-board voltage regulation, LED status indicator, SuperCap backed RAM, and a sensitive patch antenna. The interface cable is included too.

The EM-411's NMEA-0183 compatible serial output uses 2.8V TTL logic levels. If you need standard RS-232 levels (+/-12V) then the popular MAX232 family of RS-232 interface chips can be used.

Keep in mind that these modules are easily damaged by incorrect wiring or excessive voltage. If you do that you will be rewarded with something no more useful than a fancy paper weight.

Differences between the EM-411 and EM-406/406a Engine Boards:

  • EM-406a:TX and RX pins are transposed.
  • EM-406a PIN #3=RX & PIN#4=TX (RoHS lead-free)
  • EM-406a has 1PPS output on header pin #6.
  • EM-411 PIN #3=TX & PIN#4= RX (RoHS lead-free)


  1. SiRF Star III high performance GPS chipset
  2. Very high sensitivity (Tracking Sensitivity: -159dBm)
  3. Extremely fast TTFF (Time To First Fix) at low signal levels
  4. Supports the NMEA 0183 data protocol
  5. Built-in SuperCap to maintain system data for rapid satellite acquisition
  6. Built-in patch antenna
  7. Foliage Lock for weak signal tracking
  8. Compact in size
  9. All-in-view 20-channel parallel processing
  10. Snap Lock 100ms re-acquisition time
  11. Superior urban canyon performance
  12. WAAS / EGNOS support
  13. RoHS compliant


  • Position: 10 meters, 2D RMS
  • 5 meters, 2D RMS, WAAS enabled
  • Velocity: 0.1 ms
  • Time: 1ms synchronized to GPS time

Acquisition Time

  • Reacquisition: 0.1 sec., average
  • Hot Start: 8 sec., average
  • Warm Start: 38 sec., average
  • Cold Start: 42 sec., average

Dynamic Conditions

  • Altitude: 18,000 meters (60,000 feet) max
  • Velocity: 515 meters/second (1000 knots) max


  • Main Power Input: 4.5V~6.5V DC Input
  • Powwer Consumption: 60mA (35mA trickle mode)
  • Backup power: +2.5V to +3.6V
  • Backup current: 10uA typical


  • Electrical Level: TTL level,
  • Output Voltage Level: 0V~2.85V
  • Baud Rate: 4800 bps
  • Output Message: NMEA 0183 GGA, GSA, GSV, RRMC (VTG, GLL optional)

Physical Characteristics

  • Dimensions: 1.181” x 1.181” x 0.413” (30mm x 30mm x 10.5mm)
  • Operating Temperature: -40F to +176F (-40C to +85C)
  • Humidity: Up to 95% non-condensing


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20 Channel EM-411 SiRF III GPS Receiver with Antenna
$ ,42€ New In Stock
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