Holux M-241 – Outdoor GPS Datalogger
The Holux M-241 GPS Logger enables real-time recording of coordinates and provides an easy-to-use travel logging service.
The M-241 can record up to 104,724 positions (as of firmware 1.12) with longitude, latitude, time and altitude.
The M-241 is a Holux Bluetooth GPS receiver with datalogger and LCD display. The design of the M-241 is based on the GPS solution from Media Tek Inc. (MTK GPS – MT3333) low-power chip architecture.
Geo-Tagging
The log file can be transferred to the PC for analysis via a USB connection. Due to the standard format used, the log files can also be used by many online services, such as Google Maps, Google Earth, which are interpreted correctly.
You can also combine the recorded positions with the photos taken by your digital camera to provide a geographically accurate price history (GeoTagging). Thus, walking routes or itineraries can be tracked and documented.
Display, Bluetooth, NMEA
On the LCD screen of the logger, the position information, movement speed, the free space for the recording and the date/time can be controlled directly at any time. The M-241+ supports the distance and time recording modes, the kilometers and miles units.
Since the M-241+ has a Bluetooth interface, even wireless connections can be realized without any problems.
File formats provided by the program (*.kml -Google Earth, Binary, GPX and *.txt NMEA file format).
Battery lifetime
The M-241+ does not have a battery charging function. Powered by a Mignon (AA) battery, it can record satellite information for up to 12 hours. Various recording modes can be preset with the supplied program.
GPS
Using advanced technology, the M-241+ can simultaneously track signals from up to 32 satellites. It records satellite signals every 0.1 microseconds and updates the position data every second.
Technical specifications
Modell
Manufacturer | Holux |
Model | M-241Plus |
Product name | M-241+ |
Product number (P/N) | 96146-00N |
GTIN / EAN | 4711140531311 |
UPC | |
Market availability | 2012 – 2019 |
Physical data
Weight | 39 gr (without batteries) |
Size | 32.1mm X 30mm X 74.5mm |
Operating temperature | -0°C to +50°C |
Air humidity | 5% bis 90% (without condensation) |
Interface
Bluetooth | Version 1.2 compatible |
Bluetooth range | to 10m |
Frequency | 2400 – 2480 GHz |
Modulation | FHSS, GFSK |
Channels | 79 |
Signal sensitivity | -85 dBm |
Signal output | +2 dBm |
USB | Version 1.1 |
Connector | mini-USB |
Transfer data | yes |
Transfer power | no |
Memory
Built-in memory | up to 250.000 GPS-datapoints |
External memory | – |
Export format | KMZ |
Display
LCD-display | status, time, position, speed, distance, setup |
Power supply
AA battery | 8 to 12h continuous operation with Bluetooth = off |
AA battery | 4 to 6h continuous operation with Bluetooth = on |
AA accu | up to 6h continuous operation with Bluetooth = off |
AA accu | up to 3h continuous operation with Bluetooth = on |
Accu charging function | – |
external power supply | mini-USB, 5V |
GPS chipset
CPU | MTK 3333 |
Channel | 32 |
Receiver | L1, 1575.42 MHz |
Signal refresh rate | 10 Hz |
Position refresh rate | 1 Hz |
Position refresh rate opt. | 5 Hz (without logging) |
Hot start | ca. 1 Sec. |
Warm start | ca. 33 Sec. |
Cold start | ca. 36 Sec. |
GPS Antenna
built-in antenna | Patch antenna |
Sensitivity tracking signal | -159 dBm |
Sensitivity tracking position | -156 dBm |
Connector ext. antenna | – |
GPS protocol
NMEA protocol | NMEA0183 v3.1 |
NMEA format | $GPGGA, GSA, GSV, RMC, VTG |
Format optional | |
Height calculation | WGS84 |
Format optional | |
Baud rate | 38400 bits/sec |
Data/Check/Stop -Bit | 8/N/1 |
GPS position accuracy
Normal | ca. 3m (without SA) |
Normal speed | ca. 0,1m/sec (without SA) |
DGPS SBAS (EGNOS,WAAS) | – |
DGPS SBAS speed | – |
DGPS GBAS | – |
DGPS GBAS speed | – |
GPS dynamic
Dyn. height | max. 18km |
Dyn. speed | 515m/sec |
Acceleration | ± 4 G max. |
Jerk | max 20 m/sec. |
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