DEVELOPER KIT
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Features:
• Full multi-point, bi-directional operation
• 2 analog and 2 digital channels
• Fully configurable through DIP switches
• Frequency hopping spread spectrum
• Class I Div 2 certified
• 2.4GHz
• Operates over input voltage range of
+9Vdc to +30Vdc making it suitable for
battery and solar power sources
Benefits:
• Ability to confirm remote status
• Operate multiple devices from one
modem
• Reliable performance in high RF noise
environments
• Deploy in a wide variety of locations
• Useful for industrial and outdoor
applications with a -40°C to +70°C
operating temperature range and
certified for hazardous location use
HNIO-241A
HNIO-241AR
HNIO-241AX
2.4GHz Analog/
Digital I/O
Wireless
Modem
Providing multi-point, bidirectional communications, two 4 – 20mA outputs, two NO contacts, and Class I Div
2 certification, the HNHN 2.4GHz spread spectrum wireless analog/digital I/O modems are the ideal solution
for industrial and commercial monitoring and control applications. All HNIO modems include RFM frequency
hopping spread spectrum radio technology that has been field-proven to provide reliable, robust wireless
communications in harsh RF environments.
2.4GHz Analog/Digital I/O
Wireless Modem
General Specifications
RF Frequency
Licensing
Modulation
Transmit Power
2401 - 2471 MHz
Unlicensed under FCC Part 15, ETSI 300.328
GFSK
+8dBm/+18dBm (@ RF connector) software selectable; +14dB/+24dBm with integral patch
antenna
-93dBm for 10-5 BER; -99dBm with integral pathc antenna
75
460Kbps
2 – 4-20mA current loop receivers (12 bit ADC)
2 – Opto-isolated digital inputs 0-30V
2 – 4-20mA current loop transmitters (16 bit DAC)
2 – SPST (Form A) relays (NO;COM)
1 – SPST relay (NO; COM) RF link
1 – RS-232 D9 serial port
+9Vdc – +30Vdc
-40°C to +70°C
Receive Sensitivity
RF Channels
RF Data Rate
I/O
Operating Voltage
Operating Temperature
www.RFM.com E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 1 of 3
HNIO-241A - 4/10/08
Flexible I/O
The HNIO-241A modem provides two 4 – 20mA inputs, two 4 – 20mA outputs, two opto-isolated digital inputs, and two 250VAC 5A NO relay contacts.
Offering full bidirectional operation, the 2 analog inputs on one end are repeated on the 2 analog outputs of the second modem while the analog inputs of
the second radio are repeated on the analog outputs of the first modem – simultaneously. Similarly, the digital inputs on one modem control the relay
contacts of the other modem. Each base radio can connect up to four remote radios. Four base radios can be located together.
Fully Configurable
The HNIO-241A is fully configurable through DIP switches. Configurable options include edge or level triggered inputs, positive or negative activation
signals (selectable per channel), frequency of transmission from continuous to once every 45 minutes, and an RF link interruption fail-safe mode. A third
NO relay contact indicates RF link status.
Industrial Networking
The HNIO-241A is designed for industrial and outdoor applications with a -40°C to +70°C operating temperature range. The HNIO-241A can operate over
an input voltage range of +9Vdc to +30Vdc making it suitable for battery and solar power sources. The HNIO-241A is Class I Div 2 certified for hazardous
location use. The standard DIN-rail enclosure or optional six inch cabinet allows easy installation whatever the application. The HNIO-241AR and
HNIO-241AZ are external versions where the remote radio is housed in a separate NEMA 4X rated enclosure with either an integral patch antenna or a
reverse TNC antenna connector.
FHSS Technology
The frequency hopping spread spectrum technology used in the HNIO-241A has been powering a wide variety of mission-critical industrial applications for
years and embodies extensive experience in spread spectrum radio design. With superior immunity to jamming and multipath fade, RFM FHSS technology
transmits data over the air at a crisp 460.8Kbps rate providing short latencies and plenty of bandwidth. Operating in the 2.4GHz band, the HNIO-241A can
be deployed license-free worldwide.
www.RFM.com
E-mail: info@rfm.com
©2008 by RF Monolithics, Inc.
Page 3 of 3
HNIO-241A - 4/10/08
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