Remark: 1. Radio frequency handset 2. DC3.3V Power supply 3. Effective distance: within 5m 4. RF Module Frequency range: 2.405GHz-2.48GHz 5. Built-in Bluetooth Low Energy: 2402MHz-2480MHz Caution: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
