RFM products are now Murata products WIT2450M2 Features: • High speed wireless serial data transmission • Robust 2.4 GHz frequency hopping spread spectrum technology • 3.3 volt operation • Small size, light weight • Certified for unlicensed operation in the USA, Canada and Europe Benefits: • Suitable for point-to-point and point-tomultipoint networks • High immunity to interference and multipath fading • Easy to integrate • Worldwide license-free operation • RoHS Compliant • Low cost Low-Cost FHSS Transceiver Module WIT2450M2 low-cost transceiver modules are designed to transmit serial data using robust 2.4 GHz frequency hopping spread spectrum (FHSS) technology. WIT2450M2 modules employ Murata’s beacon-synchronized CSMA at an RF data rate of 460.8 kb/s to support a large number of remotes. WIT2450M2 transceivers are suitable for both point-to-point and point-to-multipoint networks. FHSS technology provides immunity to both interference and multipath fading. The small size and light weight of these transceiver modules make them suitable for a variety of applications. WIT2450M2 modules are certified for unlicensed operation in the USA, Canada and Europe. Shown with shield removed General Specifications RF Frequency Range 2400 to 2483 MHz Radio Certifications FCC Part 15.247, Canadian RSS-210 and European ETS 300.328 Operating Range Indoor - 450 to 900 ft, outdoor -3000 ft with dipole antenna, more than 6 miles with gain antennas 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 230.4 kb/s, software selectable RF Data Rate 460.8 kb/s Number of Frequency Channels 86 RF Bandwidth 900 kHz Transmit Power Output 10, 18 or 24 dBm, software selectable Receiver Sensitivity -92 dBm @ 10-5 BER Supply voltage 3.3 to 10 V, 5 to 10 V required for 24 dBm transmit power Current Consumption 24 dBm Transmit Power, 115.2 kb/s Serial Data Rate Remote Power Down 2 µA Operation: Sleep 750 µA Unlocked Receive 150 mA Locked Receive 75 mA Transmit 250 mA Size 69.85 x 47.75 x 4.57 mm Weight 28 g Operating Temperature -40 C to +70 C Humidity 20% to 90% (non-condensing) ©2010-2015 by Murata Electronics N.A., Inc. WIT2450M2 (R) 04/28/15 1 of 2 Base Station Receive Operation: Transmit 155 mA 250 mA www.murata.com Large Network Support WIT2450M2 modules transmit at an RF data rate of 460.8 kb/s using beacon-synchronized CSMA to support large point-to-multipoint (star) network applications. Serial communications between a WIT2450M2 module and its host can run at up to 230.4 kb/s to further speed data communication. Reliable WIT2450M2 modules provide both reliable communication and reliable operation. Using robust frequency hopping spread spectrum technology, WIT2450M2 modules provide immunity to interference and multipath fading. Using a 24-bit CRC for error detection, automatic retransmit request (ARQ) and a 3K 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 WIT2450M2 modules are manufactured in an ISO9000 certified facility. Simple Simple to integrate and use, the WIT2450M2’s default parameter settings work for most applications. For other applications, software control makes changing parameter settings easy. The WIT2450M2, with its small size and low power consumption, is simple to integrate into your product. The WIT2450M2’s RS-232 style interface with standard 3.3 volt CMOS signal levels makes integration easy. Since WIT2450M2 modules are certified for license free operation in the USA, Canada and Europe, your WIT2450M2 based product does not have to repeat radio regulatory approval. Versatile WIT2450M2 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 230.4 kb/s are provided for serial communication between a WIT2450M2 and its host. Measuring just 69.85 x 47.75 x 4.57 mm and weighing 28 grams, the WIT2450M2 can be integrated into fixed, portable or handheld devices with little impact on the size and weight. Connector I/O Pins Pin Signal Type 1 GND - Description Signal and chassis ground 2 TxD Input 3 RxD Output Data input to be transmitted 4 CFG Input Configuration select, used to switch radio between data and control mode 5 RTS Input Request to send input, used for receive flow control by the host 6 Sleep/DTR Input 7 DCD Output Received data output Module sleep/DTR input, sleep is active high Data carrier detect, indicates FHSS synchronization on remotes 8 CTS Output Clear to send output, used for receive flow control by the radio 9 RSSI Output Received signal strength indicator (analog signal) 13 RSSI Strobe Output 14 Power Down Input 16 Vcc Power High signal indicates valid RSSI Low power mode input, active low Positive supply - minimum 3.3 V, nominal 5.0 V, maximum 10.0 V hysical Specifications - dimensions in inches ©2010-2015 by Murata Electronics N.A., Inc. WIT2450M2 (R) 04/28/15 2 of 2 www.murata.com