When you are purchasing 10pcs/lot BL602 WiFi Chip Using BL602 IoT SDK RISC-V WiFi & Bluetooth 5.0 BLE SoC 2 in 1 Bluetooth and WiFi, it's best to stay with reputable retailers. Look for names you recognize and put your confidence in. Although you hope your purchase will work flawlessly, there's always the chance you'll have a problem and need to return the item. Investing in from a merchant that has available online customer service, a good return policy, and a proven status will make any repairs needed much simpler. Be sure the check-out is secure. When you reach the payment page, there should be a little icon that looks like a padlock in your navigation fridge. This is the symbol for a established site; if it isn't presently there, be wary. To obtain even larger security, pay for your things through a third party site. These will keep your information safe and will often offer special personal savings on items purchased utilizing their system.