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© 2008-2012 by RF Monolithics, Inc.

WIT910 - 2/28/12

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

Dynamically assigned 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 Transmit Power,

57.6 kb/s Serial Data Rate

Remote

Sleep

250 µA

Base Station

Receive

125 mA

Operation: Standby

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 +80 C

Humidity

20% to 90% (non-condensing)

900 MHz

FHSS

Transceiver

Module

WIT910M

Features:

• Fast, low latency 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 applications

• Easy to integrate

• Ideal for battery powered devices

Shown with shield removed

WIT910M transceiver modules are designed to transmit serial data using highly robust 900 MHz

frequency hopping spread spectrum (FHSS) technology. WIT910M modules employ RFM’s

beacon-synchronized TDMA at an RF data rate of 172.8 kb/s to achieve low transmission latency.

WIT910M transceivers are suitable for both point-to-point and point-to-multipoint networks. FHSS

technology provides strong immunity to both interference and multipath fading. The small size, light

weight and low power consumption of these transceiver modules make them suitable for a wide

variety of applications. WIT910M modules are certified for unlicensed operation in the USA,

Canada, Australia, Israel and New Zeland.