Telematics Witreless Proprietary
2WMMR
User Manual
Rev V1
October 27, 2013
2WMMR User V1 October 27, 2013
Page 1 of 10
Telematics Witreless Proprietary
Compliance With FCC Regulations
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates uses
and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
1. Reorient or relocate the antenna.
2. Increase the separation between the equipment and device.
3. Connect the equipment into an outlet on a circuit different from that to which the device is
connected.
4. Consult the dealer or an experienced radio/TV technician for help
This device complies with Part 90 of FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may
cause undesired operation
The User and the Installer should be aware that changes and modifications
to the equipment not expressly approved by Telematics Wirel ess could void
warranty and the user's authority to operate the equipment.
2WMMR User V1 October 27, 2013
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Telematics Witreless Proprietary
Table Of Content
1. INTRODUCTION. ....................................................... ...................................................4
2. ABOUT 2WMMR...........................................................................................................5
2.1. PRONT PANEL .............................................................................................................5
2.2. REAR PANEL ................................................................................... ............................6
2.3. FCC LABEL.............................................................. ...................................................8
2.4. RF ELECTRICAL SPECIFICATION ....................................................................................9
2.5. ENVIRONMENTAL CONDITIONS ....................................................................................10
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1. Introduction
The 2WMMR is a plug and play multi channel/frequency RF Transceiver unit operates at
450-470MHz ISM band.
The 2WMMR unit is designated to transceiver/collect wireless transmissions of water
meter.
The 2WMMR includes module Bluetooth FCC ID S7APARANIESD1XXV2 or module
WI-FI FCC ID MCQ-50M880
The 2WMMR includes the following on board interfaces which ar e used to send the
collected data:
TCP/IP stack and 10/100 BASE-T Ethernet connection
Telematics Witreless Proprietary
USB
RS232
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2. About 2WMMR
2.1.
Pront Panel
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2.2.
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Rear Panel
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2.3.
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FCC Label
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Telematics Witreless Proprietary
2.4 RF Electrical Specification
Table 2.4.1 Parameters of the Receiver
Parameter Value
Receive frequency Programmable 450-470 MHz
Sensitivity (BER 1E-3) -123 dBm (for 4.8 kbps)
Modulation 4GFSK
Frequency deviation 1.2 kHz
Bit rate 4.8 kbps
Coding NRZ/Manchester
Frequency stability (includin g initial stability,
temperature and aging)
<0.5 ppm
Table 2.4.2 Parameters of the Transmitter
Parameter Value
Transmit Frequency 450-470 MHz
Modulation 4GFSK
Bit rate 4.8 kbps
Chip rate 2.4 kChip/sec
Bandwidth 6.25 kHz
Frequency stability (including initial
stability, temperature and aging)
<0.5 ppm
Peak Output power 35 dBm or 20dBm (programmable)
Harmonics < - 65 dBc
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2.5 Environmental Conditions
Operating Temperature: -20° C to + 85° C
Storage Temperature: -40° C to +85° C
Humidity: Up to 95%
Telematics Witreless Proprietary
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