ETC AC4868-250M-485

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
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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
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Inventory tracking
Order processing
Credit/debit verification
Merchandise vending
Portable registers
Gaming Devices
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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