| Parameters | 
                                                                                                            
                                            | Factory Lead Time | 2 Weeks | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 
                                                                                                    
                            
                         
                                                4521 Overview
4521 Features
4521 Applications
There are a lot of Adafruit Industries LLC 4521 RF Transceiver Modules applications. 
- Industrial Controls
- Secure Payment
- Power management
- Fitness
- Consumer Electronics
- Wireless Price Tags
- Internet Radio
- Remote Device Management
- Health care
- Medical