The TX/RX 1000A system could be a good fit for high-traffic stores, especially if you have multiple entry points and need reliable motion detection. Here are a few benefits that might make it suitable:

1. Long Range: It has a transmission range of up to 1,000 feet, which is ideal for larger spaces.
2. PIR Sensors: The passive infrared sensors can detect both motion and heat, ensuring accurate detection even in busy environments.
3. Customizable Chimes: You can choose different chimes for various entry points, which can help distinguish between different areas of your store.
4. Easy Installation: The system is designed for straightforward installation, minimizing disruption to your store’s operations.

However, if your store experiences extremely high traffic, you might also want to consider systems with advanced features like multiple receivers or enhanced motion detection to ensure optimal performance.