RF Sensor Tag Systems VS. AM Sensor Tag Systems

As mentioned earlier, both systems involve communication between an antenna and sensor tags. The main difference between RF and AM is the systems' frequency. A radio frequency (RF) sensor tag system can be 2.0, 4.6, 8.2 or 9.5 MHz but most commonly operates at 8.2 MHZ, while an Acousto Magnetic (AM) sensor tag system operates at 58KHz. 

Best Places to Use RF Sensor Tag Systems

Supermarkets, discount stores, and pharmacies usually use RF sensor tag systems because these retailers have a high volume of packaged products.

The use of RF systems are generally recommended for single aisle (36”) or dual aisle (72”) entrances as each system (tower, pedestal, antenna) covers 3’;

You will often see RF systems in stores that do not have a lot of metal merchandise like bikes, hardware, tools, etc.

Advantages & Disadvantages of RF Sensor Tags 

Most retailers choose RF sensor tags because they are more budget-friendly. The prices can range from very low cost to high cost for advanced RF systems, so you have more flexibility in deciding a price point. RF sensor tags are available as flat paper labels. They can come in a wide variety of shapes, sizes, and presentations, making them easy to use for a high volume of packaged products.

While RF sensor tags have many advantages, the most significant disadvantage is that they are more sensitive to electronic interference and have a limited detection range. They also cannot be reused once the circuit is broken. 

Best Places to Use AM Sensor Tag Systems

AM sensor tag systems are typically found in department stores, clothing outlets, electronics shops, and hardware stores. Products at these locations have a metallic component that a magnet can easily attach to. 

Advantages & Disadvantages of AM Sensor Tags

One of the biggest benefits of AM senor tags is that they are magnetic, so you can reuse them after deactivation. They are also less susceptible to electronic interference, so you do not have to worry about placing the sensor in a specific spot. Another plus is unlike RF sensor tags; they have a larger detection area so antennas can be positioned farther apart, being placed inside door frames, under floors, etc.

AM sensor tags are typically more expensive than RF sensor tags and cannot be bent around the merchandise or easily printed on like RF. If you are a retailer with a high turnover of goods, these would not be the best sensor tags for your store.