Digi XBee SX RF Modems
1-Watt industrial-grade 900 MHz RF modem with best-in-class range and power consumption
- Adjustable output power up to 1-Watt achieves up to 65 mile range with high gain antenna
- Interfaces options include RS-232, RS-485, USB, Analog I/O and Digital I/O
- DigiMesh networking topology for redundancy and reliability
- 256-bit AES encryption for secure data communications
- Rugged metal enclosure and -40º C to +85º C operating temperature for industrial applications
- Fully certified for use in free, unlicensed 900 MHz band
| Item | Digi XBee SX RF Modems |
|---|---|
| PERFORMANCE | |
| INDOOR/URBAN RANGE | Up to 18 km (11 mi)* at low data rate |
| OUTDOOR/RF LINE-OF-SIGHT RANGE | Up to 105 km (65 mi)** at low data rate |
| TRANSMIT POWER | Up to 30 dBm software selectable |
| RF DATA RATE (SOFTWARE SELECTABLE) | Low data rate: 10 kbps; Middle data rate: 110 kbps; High data rate: 250 kbps |
| RECEIVER SENSITIVITY | Low data rate: -113 dBm; Middle data rate: -106 dBm; High data rate: -103 dBm |
| RECEIVER IF SELECTIVITY | Low data rate: 40 dB @ 250 kHz; 50 db @ 500 kHz Middle data rate: 30 dB @ 250 kHz; 40 db @ 500 kHz High data rate: 30 dB @ 500 kHz; 45 db @ 1000 kHz |
| RECEIVER RF SELECTIVITY | Below 900 MHz and above 930 MHz: >50 dB |
| NETWORK AND SECURITY | |
| FREQUENCY RANGE | ISM 902 MHz to 928 MHz |
| SPREAD SPECTRUM | Frequency hopping |
| SUPPORTED NETWORK TOPOLOGIES | Mesh, Point-to-point, Point-to-multipoint, Peer-to-peer |
| MODULATION | Gaussian Frequency Shift Keying (GFSK) |
| ENCRYPTION | Optional 254-bit Advanced Encryption Standard (AES) cipher block chaining (CBC) Encryption |
| ANTENNA | |
| CONNECTOR | RPSMA |
| ANTENNA IMPEDANCE | 50 Ω unbalanced |
| INPUT LEVEL AT ANTENNA PORT | Maximum 6 dBm |
| POWER REQUIREMENTS | |
| SUPPLY VOLTAGE RANGE | 7-30 VDC |
| TYPICAL SUPPLY VOLTAGE | 12 V |
| RECEIVE CURRENT | 20 mA (@12V) |
| TRANSMIT CURRENT | 300 mA (@12V) |
| SLEEP CURRENT | 5 mA (@12V) |
| PHYSICAL PROPERTIES | |
| SIZE | 4.5 in x 2.75 in x 1.125 in (11.4 cm x 7 cm x 2.9 cm) |
| WEIGHT | 5 oz (142 g) |
| DATA CONNECTION | Female RJ-45 (RS232/485), 10-pin screw terminal (4 digital, 4 analog, GND, 12 VDC output), USB mini-B (configuration port) |
| OPERATING TEMPERATURE | -40° C to +85° C (Industrial) |
| ANALOG INPUTS | |
| ABSOLUTE VOLTAGE RATING | Maximum: 11 V; Minimum: -.05 V (each pin) |
| OPERATING INPUT RANGE | Single-ended voltage mode: 0 - 10 VDC Current loop mode: 4 - 20 mA Differential voltage mode: ± 4 VCD |
| IMPUT IMDEDANCE | Single-ended voltage mode: 13300 Ω Current loop mode: 120 Ω Differential voltage mode: ~1 MΩ |
| RESOLUTION | 10 bits |
| ACCURACY | .5% at 25º C |
| DIGITAL INPUTS | |
| INPUT TYPE | Non-inverting Schmitt trigger gate |
| POSITIVE-GOING SWITCHING THRESHOLD | 2.5 V |
| NEGATIVE-GOING SWITCHING THRESHOLD | 1 V |
| ABSOLUTE VOLTAGE RATING | Maximum: 31 V; Minimum: -.05 V (each pin) |
| IMPUT IMDEDANCE | ~1 MΩ |
| DIGITAL OUTPUTS | |
| OUTPUT TYPE | Open collector sinking driver |
| MAXIMUM SINK CURRENT | 200 mA |
| MAXIMUM SUPPLY VOLTAGE | 31 V (for external pull-up resistor) |
| RESISTOR PULL-UPS | 10 kΩ pulled up to 3.3 VDC |
Digi XBee SX 1-Watt 900 MHz RF modems provide a combination reliability and redundancy for integrators building low-power, mission-critical wireless systems. With interface options including RS232/485 or Digital/ Analog I/O, these modems utilize the DigiMesh® wireless networking protocol, with redundant mesh network operation and support for low-power sleeping nodes.
Customers that don’t require mesh network architecture can configure the modem to operate in simple point to multipoint mode. With ideal RF line-of-sight range estimated up to 65 miles and strong interference blocking, these modems are ideal for applications requiring a reliable, redundant wireless cable replacement over longer ranges.
The Digi XBee SX modems can be configured easily via the USB port, using Digi’s free XCTU software. They are precertified for use in multiple countries and provide secure, reliable delivery of critical data between devices with 256-bit AES encryption.