Designed to provide OEMs with license-free communications over long distances, AC4868 becomes the essential, affordable alternative to products operating in the saturated 433MHz band. The fully certified 868MHz transceiver delivers 250mW of output power, ideal for highly industrial European applications where reliable data deployment is crucial. AC4868 supports a host of communication architectures: point-to-point, pointto-multipoint and peer-to-peer. Its dynamic serial firmware manages difficult over-the-air issues such as error detection, multipath concerns, link verification and interference. It is simply the best price/performance 868MHz available. • Approved for European use. AC4868 modules are socket-compatible with AeroComm’s 900MHz or • Seamless cable-to-transceiver replacement. 2.4GHz transceivers, enabling OEMs to design once and subsequently inter- • High 868MHz data rate: 57.6 Kbps. change radios to accommodate new markets, regulations and environments. • Small form factor: 1.65 x 1.9 inches. European approval allows use of the transceiver in both mobile and fixed • Operates in –40ºC to +80ºC temperatures. installations without further licensing requirements. • 250mW enables up to 15-kilometer range. Recreation Areas • • • • • Irrigation systems Golf cart tracking Score keeping Order entry Grounds maintenance Pool & Spa Control • Temperature monitoring • Pump activation • Illumination • Environmental controls • Access & activity alerts Point of Sale • • • • • Inventory tracking Order processing Credit/debit verification Merchandise vending Portable registers Gaming Devices • • • • • Lottery machines Portable bingo Bar trivia Casino slots Game kiosks Utilities Management • Automatic meter reading • Load profiling, forecasting • Data management • Tampering alerts • Real-time support PARAMETER AC4868–250 Interface 20-pin mini connector Frequency 869.40–869.65MHz Modulation SF FSK Serial interface options 3V TTL Serial interface data rate Up to 57.6 Kbps Output power (w/ 2dBi antenna) 250mW variable Power consumption (transmit/receive) 240mA/36mA Security One-byte system ID Sensitivity (w/ 2dBi antenna) -103 dBm typical @28.8 Kbps Voltage Pin 10: 3.3-5.5V +/–50mV ripple Pin 11: 3.3V +/–3%, +/–100mV ripple Range Up to 15 kilometers line of sight Temperature -40o to +80ºC Humidity (non-condensing) 10% to 90% Dimensions 1.90 x 1.65 x 0.20 inches (49 x 42 x 5 mm) Weight < 0.75 oz (< 21 g) Antenna External MMCX connector * The 868MHz frequency band is approved in Europe as an unlicensed spectrum subject to approval by device. ** Although AC4868 radios will not talk to AC4490 radios, socket-compatibility allows for interchanging the modules network-wide. Flexible RF Protocol AeroComm’s embedded transparent protocol simplifies the OEM’s integration process by allowing for drop-in installation. As each transceiver receives raw data, it manages over-the- AC4868, Actual Size air protocol to assure successful communication. Headers, data packet length, and CRCs are not needed. RF232 supports simple cable-replacement to complex peerto-peer configurations. Broadcast communication to all transceivers or address packets to a specific destination using unique MAC addresses embedded in each transceiver. Protocol Features RF Architectures Select features from the list below to identify the appropriate part number. More product lines are available for industrial & commercial applications. Contact AeroComm Sales for details: toll-free 1-800-492-2320, email [email protected]. R F PROTOCOL MODES a) Communication Unicast (one-to-one addressing) Broadcast (one-to-many addressing) b) Acknowledgement mode (ACK) API with hardware/software ACK indication Placing Orders Point-to-point PART NUMBERS INTERFACE PROTOCOL AC4868-250M 868MHz transceiver, TTL serial RS232, 0–250mW, -40º to +80º C, MMCX antenna a) On-the-fly transceiver configuration Destination address RF transmit power Broadcast/addressed AC4868-250M-485 868MHz transceiver, TTL serial RS485, 0–250mW, -40º to +80º C, integral antenna Point-to-multipoint b) 9-bit serial interface mode c) A/D, D/A generic I/Os d) Variable baud rate e) RF packet size, timeout control f) Onboard temperature sensor g) Handshaking CTS/RTS h) In-range indicator i) Error detection Onboard CRC Duplicate packet filtering j) Data encryption standard (DES) Multipoint-to-multipoint