Wireless Door Chime (630-0872) Care and Maintenance Faxback Doc. # 16486 The following suggestions will help you care for your Radio Shack Wireless Door Chime so you can enjoy it for years. Keep the receiver dry. Handle the receiver carefully. Don't drop it. Modifying or tampering with the Wireless Door Chime's internal components can cause a malfunction and might invalidate its warranty. If your door chime is not performing as it should, take it to your local Radio Shack store for assistance. (ALL-08/15/95)