The is a compact, budget-friendly Bluetooth audio receiver designed primarily to add wireless connectivity to car stereos or home audio systems via a 3.5mm auxiliary (AUX) input . Product Overview
| Feature | hsb133 (Superhet) | MX-RM-5V (Superregenerative) | nRF24L01 (2.4GHz) | | :--- | :--- | :--- | :--- | | Frequency | 433 MHz | 433 MHz | 2.4 GHz | | Range (outdoor) | 150m+ | 50-80m | 100m (with PA) | | Noise immunity | Excellent | Poor | Medium (crowded band) | | Current (Rx) | 5.5 mA | 3.5 mA | 13.5 mA | | Protocol | Simple ASK | Simple ASK | Complex SPI/ShockBurst | | Cost | $2 - $4 | $1 - $2 | $2 - $5 | | Ease of use | Beginner | Beginner | Intermediate | hsb133 receiver