Description
Technical Specifications
| Â Chip | Â EFR32MG21A020F768IM32-B |
| Â Standard | Â 802.15.4 PHY or MAC Zigbee |
| Â Frequency | Â 2.400 to 2.483GHz |
| Â Max Output | Â 20dBm |
| Â Dynamic Output | Â >35dB |
| Â Transmission Distance without Any Obstacles | >150m |
|  Frequency Error |  ±15ppm |
| Â Theoretical Transfer Rate | Â 250kbps |
| Â Receiving Sensitivity | Â Typical -102dBm, PER<10% |
| Â 16 | |
| Â Channel Number | Â 11 to 26 |
| Â Network Topology | Â Support star or tree or mesh network |
| Â Antenna | Â PCB onboard antenna by default |
| Â Firmware Update | Â Support OTA |
| Â Chip | Â RTL8721CSM |
| Â Main Frequency | Â 200MHz |
| Â Chip Structure | Â Arm M3 |
| Â Operating System | Â RTOS |
| Â Flash | Â 8Mbit |
| Â PSRAM | Â 4Mbit |
| Â USB | 1 x USB host or device, 1 x USB PHY |
| Â UART | 1 x debug, 1 x data |
| Â GPIO | 10 |
| Â Timer | 2 x hardware timer, 1 x watchdog |
| Â Indicator | Â 1 x power indicator, 1 x network indicator |
| Button | 1 x reset button |
| Camera | No camera |
| Universal | Use |
| Power Source | Electric |
| Private Mold | Yes |
| Â Adapter | 110V to 240V AC, 5V per 1.5A DC |
| Â Working Voltage | Â 4.5V to 5.5V |
| Â Working Humidity | Â 10% RH to 90% RH (non-condensing) |
| Â Storage Humidity | Â 5% RH to 90% RH (non-condensing) |
|  Working Temperature |  14°F to 131°F (-10 to 55℃) |
| Â Size | 2.56 in x 2.56 in x 0.57 in (65 mm x 65 mm x 14.5 mm) |
| Â Weight | 1.06 ounces (30g) |