Sell Guardian 4 (7040A)

Got extra Guardian 4 (7040A) sensors? Sell CGM makes it easy to turn them into fast cash.

We only purchase new, factory-sealed boxes with the sensor still inside and in mint condition.

• Boxes with light imperfections may receive a $20 deduction.

• Opened, crushed, stained, expired, or smoke-damaged boxes will be discarded and no payment will be issued.

Please select the correct expiration date range to receive an accurate quote.

Earn top dollar today — sell your Guardian 4 sensors quickly and securely with Sell CGM.