Check the listing for details. Screen For Fluke BT521 500 Series Battery Analyzers Tester Display Replacement. Condition: New. Listed at 159.99 USD. For Fluke BT521. For Micro Display. Note: Pl e as econfirm t he model of the screen before purchasing！. Screen For Thermostat. I am sure we can work things out through good communication. For Aranet4.