Digi International XBee S2C Zigbee Module 802.15.4 2.4GHz w/ Wire Antenna

Series 1 modules (802.15.4) are for simple point-to-point networks, while Series 2 modules (like this S2C) run Zigbee mesh networking firmware, enabling self-healing, multi-hop networks. They are not cross-compatible; a Series 1 module cannot join or communicate with a Series 2 Zigbee network, requiring careful selection for your application's topology.

Configure the module using Digi International's XCTU software via a USB-to-serial adapter connected to its UART pins (DIN/DOUT). You can set network parameters (PAN ID, channels), I/O settings, and device roles. For custom Zigbee applications, you can write and flash firmware using the Silicon Labs EmberZNet SDK, which targets the onboard EM357 processor, enabling advanced functionality beyond standard AT command sets.

The module operates from 2.1V to 3.6V DC. With a transmit current of 33mA, receive current of 28mA, and a deep sleep current under 1µA, battery life depends heavily on duty cycle. For example, a 2000mAh battery with one transmission per hour could last years. Ensure a stable, clean power supply, especially during RF transmission, to prevent brownouts or reset issues.

No, the XB24CZ7WIT-004 variant has a permanently integrated wire antenna and lacks an external antenna connector like U.FL or SMA. For projects requiring an external or directional antenna, you must select a different XBee model suffix (e.g., one with an RP-SMA connector). The integrated antenna is optimized for omnidirectional coverage in the 2.4GHz band.

The 15 GPIO pins are configurable via AT commands or custom firmware as digital inputs/outputs, PWM outputs, or analog inputs (on 4 specific ADC channels). You can connect sensors directly, using appropriate voltage level shifting if needed, as the I/O logic levels correspond to the module's supply voltage (2.1-3.6V). Pin mapping and configuration are detailed in the Digi International XBee 2C product manual.