www.rfm.com e-mail: info@rfm.com page 1 of 2 ? 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 - mo re than 20 miles with omni-directional antenna network topologies point-to-point and point-to-multipoint (star) network protocol dynam ically assigned tdma error detection and correction 24-bit crc and arq serial data interface asynchronous (uar t) 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 tr ansmit 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 a 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 tran smit 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 inte rference and multipath fading. the small size, light weight and low power consumption of these tran sceiver modules make them suitable for a wide variety of applications. WIT910M modules are ce rtified for unlicensed operation in the usa, canada, australia, israel and new zeland.
www.rfm.com e-mail: info@rfm.com page 2 of 2 ? 2008-2012 by rf monolithics, inc. wit910 - 2/28/12 connector pinout pin signal type description 1 gnd - signal and chassis ground 2 txd input data input to be transmitted 3 rxd output received data output 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 module sleep/dtr input, sleep is active high 7 dcd output data carrier detect, indicates fhss synchronization on remotes 8 cts output clear to send output, used for receive flow control by the radio 10 power down input low power mode input, active low 16 vcc positive supply - minimum 3.3 v, 5 v mini mum for 29 dbm transmit power, maximum 10.0 v pin 1 .21 [5.3] 1.69 [42.9] 3.16 [80.2] .13 [3.3] 1.69 [42.9] 1.83 [46.5] 1.48 [37.6] .135 [3.43] countersink and clearance hole for #2-56 [2.0 x 0.4] flathead screw. (2 plcs) .34 [8.6] .13 [3.3] rf connector .21 [5.3] .74 [26.1] long operating range with 29 dbm of transmit power and a receive sensitivity of -103 dbm, th e WIT910M can achieve ranges in excess of 20 miles using 3 dbi omni-directional antennas. when long range isn?t needed, the WIT910M, meas uring 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 ind ustry- leading wit2410m4g module, the WIT910M c an 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 technol ogy, the WIT910M provides immunity to jamming as well as immunity to multipath fading. using a 24-bit crc for error detection, autom atic retransmit request (arq) and a 512 byte data buffer, error-free transparent communication is auto matic. built-in data scramblin g adds a measure of security. reliable operation is assured through rfm?s stringent qa processes. all WIT910Ms are manufactured in an is o9000 certified facility. simple simple to integrate and use, the WIT910M?s default parameter se ttings work for most applications. for other applications, softw are 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 interf ace with standard 3.3 volt cmos signal levels makes integration easy. since WIT910M modules are certified for license free operat ion in the usa and canada, your WIT910M based product does not have to repeat radi o regulatory approval. versatile WIT910M operating parameters are configurable under software co ntrol. 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. b aud rates from 1.2 to 115.2 kb/s are pro vided for serial communication between a WIT910M and its host. physical specifications - dimensions in inches (mm)
www.rfm.com e-mail: info@rfm.com page 3 of 2 ? 2008-2012 by rf monolithics, inc. wit910 - 2/28/12 powerful with a full 1/2 watt transmit power and a receive sensitivity of -103dbm, the WIT910M can achieve ranges in excess of 20 miles using 3db omni-directional antennas. when long range isn?t needed, the WIT910M, measuring just 80.2mm x 46.5mm x 8.6mm and weighing just 35 grams is a pow erful performer at low power, consuming less than 100ma at 3.3 volts. with the same size and mounting dimensions of the industry-leading wit2410 module, the WIT910M can be used in place of the wit2 410 in existing designs, creating a 900mhz product with practically no development effort. versatile all of the module parameters are configurable under software c ontrol. even transmit power can be selected through a straightfor ward command set. point- to-point and point-to-multipoint modes are supported. standard communication rates between the 910 and the host are supported b etween 1200 bps and 57.6 kbps. non-standard rates are supported as well. reliable the WIT910M provides both reliable comm unication and reliable operation. with frequency hopping spread spectrum technology, the WIT910M provides immunity to jamming as well as immunity to multipath fading. using automati c retransmit request (arq) in addition to a 512 byte buffer, transparent error- free communication is automatic. the built-in data scrambling adds a measure of security. reliable operation is assured through our stringent qa processes. all WIT910Ms are manufactured in an iso9000 certified facilit y; another reason cirronettm is the choice of hundreds of designers. simple simple to use and simple to integrate. although the WIT910M offe rs great flexibility, the factory default settings work for man y applications. for those other applications, software control makes changing settings simple. the WIT910M, with its small size and low power consumption, is si mple to integrate into your product. the rs-232 style interfac e with standard cmos signal levels makes the electronic integrat ion easy. since the WIT910M is fcc certif ied, your 910-based product does not have t o repeat the fcc type approval.
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