WIT910M RFM, WIT910M Datasheet - Page 2

• Manufacturer Part Number: WIT910M
• Description: OEM 900 MHZ FHSS MODULE, 178.2 K
• Manufacturer: RFM
• Series: WITr

Specifications of WIT910M

• Frequency: 900MHz
• Data Rate - Maximum: 86.4kbps
• Modulation Or Protocol: FHSS, TDMA
• Applications: Cellular, TDMA
• Sensitivity: -103dBm
• Voltage - Supply: 3.3 V ~ 10 V
• Current - Receiving: 40mA
• Current - Transmitting: 100mA
• Data Interface: Connector, 2 x 8 Header
• Operating Temperature: -40°C ~ 70°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Power - Output: -
• Memory Size: -
• Antenna Connector: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 583-1107

Physical Specifications - dimensions in inches (mm)
Long Operating Range
With 29 dBm of transmit power and a receive sensitivity of -103 dBm, the WIT910M can achieve ranges in excess of 20 miles using 3 dBi
omni-directional antennas. When long range isn’t needed, the WIT910M, measuring just 80.2 x 46.5 x 8.6 mm and weighing just 35 grams,
is a powerful performer at low power, consuming only 100 mA at 3.3 volts. With the same size and mounting dimensions of the industry-
leading WIT2410M4G module, the WIT910M can be used in place of the WIT2410M4G in existing designs, creating a 900 MHz product
with little development effort.
Reliable
The WIT910M provides both reliable communication and reliable operation. Using robust frequency hopping spread spectrum technology,
the WIT910M provides immunity to jamming as well as immunity to multipath fading. Using a 24-bit CRC for error detection, automatic
retransmit request (ARQ) and a 512 byte data buffer, error-free transparent communication is automatic. Built-in data scrambling adds a
measure of security. Reliable operation is assured through RFM’s stringent QA processes. All WIT910Ms are manufactured in an ISO9000
certified facility.
Simple
Simple to integrate and use, the WIT910M’s default parameter settings work for most applications. For other applications, software control
makes changing parameter settings easy. The WIT910M, with its small size and low power consumption, is simple to integrate into your
product. The WIT910M’s RS-232 style interface with standard 3.3 volt CMOS signal levels makes integration easy. Since WIT910M
modules are certified for license free operation in the USA and Canada, your WIT910M based product does not have to repeat radio
regulatory approval.
Versatile
WIT910M operating parameters are configurable under software control. Even the transmitter power level can be selected using a straight-
forward command set. Both point-to-point and point-to-multipoint modes are supported. Baud rates from 1.2 to 115.2 kb/s are provided for
serial communication between a WIT910M and its host.
Connector Pinout
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©2008 by RF Monolithics, Inc.
13 [3.3]
Pin
10
16
1
2
3
4
5
6
7
8
.21 [5.3]
Power Down
Sleep/DTR
Signal
DCD
CFG
RTS
CTS
Gnd
TxD
RxD
Vcc
Output
Output
Output
Type
Input
Input
Input
Input
Input
.74 [26.1]
-
RF CONNECTOR
Description
Signal and chassis ground
Data input to be transmitted
Received data output
Configuration select, used to switch radio between data and control mode
Request to send input, used for receive flow control by the host
Module sleep/DTR input, sleep is active high
Data carrier detect, indicates FHSS synchronization on remotes
Clear to send output, used for receive flow control by the radio
Low power mode input, active low
Positive supply - minimum 3.3 V, 5 V minimum for 29 dBm transmit power, maximum 10.0 V
.34 [8.6]
1.48 [37.6]
PIN 1
.21 [5.3]
.135 [3.43]
1.69 [42.9]
3.16 [80.2]
COUNTERSINK AND CLEARANCE HOLE FOR
#2-56 [2.0 X 0.4] FLATHEAD SCREW. (2 PLCS)
1.69 [42.9]
.13 [3.3]
WIT910 - 6/5/08
1.83 [46.5]
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