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©2008 by RF Monolithics, Inc. WIT910M 2 - 6/5/08
DEVELOPER KI T
(Info: click here)
General Specifications
RF Frequency 902 to 927 MHz
Radio Certifications FCC Part 15, Canadian RSS-210
Operating Range Indoor - 1000 ft, Outdoor - more than 20 miles with omni-directional antenna
Network Topologies Point-to-point and point-to-multipoint (star)
Network Protocol High remote capacity CSMA with option for limited TDMA
Error Detection and Correction 24-bit CRC and ARQ
Serial Data Interface Asynchronous (UART) CMOS signals, 3.3 V, 5 V tolerant
Serial Data Rate up to 115.2 kb/s, software selectable
Channel Data Rate 172.8 kb/s
Number of Frequency Channels 54
RF Bandwidth 460 kHz
Transmit Power Output 10, 20, 27 or 29 dBm, software selectable
Receiver Sensitivity -103 dBm for 10-5 BER
Supply voltage 3.3 to 10 V for up to 27 dBm transmit power , 5 to 10 V for 29 dBm transmit power
Current Consumption
29 dBm T ransmit Power,
57.6 kb/s Serial Data Rate
Remote Sleep 250 µA Base Station Receive 125 mA
Operation: S tandby 43 mA Operation: Transmit 800 mA
Receive 100 mA
Transmit 800 mA
Size 80.2 x 46.5 x 8.6 mm
Weight 35 g
Operating Temperature -40 C to 70 C
Humidity 20% to 90% (non-condensing)
900 MHz
FHSS
Transceiver
Module
WIT910M2
Features:
• Fast wireless serial data transmission
• Robust 900 MHz frequency hopping
spread spectrum technology
• More than 20 mile outdoor range with
omni-directional antennas
• 3.3 volt operation, low power
consumption
• Small size, light weight
• Certified for unlicensed operation in the
USA and Canada
Benefits:
• Suitable for point-to-point and point-to-
multipoint networks
• Supports large number of nodes
• High immunity to interference and
multipath fading
• Supports long range applica t ion s
• Easy to integrate
• Ideal for battery powered devices
•RoHS Compliant
Shown with shield removed
WIT91 0M2 transc eive r modul es are d esign ed to tra nsmi t serial dat a usin g high ly robu st 900 M Hz
frequency hopping spread spectrum (FHSS) technology. WIT910M2 modules employ RFM’s
beacon- synchronized CSMA at an RF data rate of 172.8 kb/s to support a high number of remotes.
WIT910M2 transceivers are suitable for both point-to-point and point-to-multipoint networks. FHSS
technology provides strong immunity to both interference and multip ath fading. The small size, light
weight and low power consumption of these transceiver modules make them suitable for a wide
variety of applications. WIT910M2 modules are certified for unlicensed operation in the USA,
Canada, Australia, Israel and New Zeland.