How to Design a Bluetooth Low Energy Circuit with Sensor Technology

Source: https://www.allaboutcircuits.com/technical-articles/how-to-design-a-bluetooth-low-energy-circuit-with-sensor-technology/

Certifications

Each country has its own regulations concerning the emission of radio frequencies, and every BLE system must be in compliance. In the United States, the FCC regulates emissions in the 2.4 GHz ISM band, and if the product is sold commercially, FCC certification is required.
FCC certification usually costs a minimum of about $10,000 for a custom-chip (i.e., non-module) solution (which is classified as an "intentional radiator"), versus only about $1,000 for a solution using a BLE module (classified as a "non-intentional radiator").
Both "classic" Bluetooth and Bluetooth Low Energy require you to pay an $8,000 licensing fee. This is true whether you use a pre-certified module or a chip solution.
The designer of a BLE system should be aware that significant testing expense, certification cost, and design effort can be avoided by using a pre-certified BLE module.

If you would like to learn more about developing a new electronic product, check out my Ultimate Guide - How to Develop a New Electronic Product.