Testo-0554-0188-Radio-Module-Compatible-with-Testo-Series-435-2-625-635-Testo-0554-0188-P-The-Testo-0554-0188-is-a-Radio-Module-for-insertion-into-measuring-instruments-Testo-435-2-625-635-735-2-922-&-926-P-P-The-Module-uses-the-frequency-of-869-85 M Hz-&-is-approved-for-the-countries-DE-FR-UK-BE-NL-ES-IT-SE-AT-DK-FI-HU-CZ-PL-GR-CH-PT-SI-MT-CY-SK-LU-EE-LT-IE-LV-NO-P-Testo-0554-0188-Radio-Module-Compatible-with-Testo-Series-435-2-625-635