Expertise Expert Opinion of the Notified Body on the Conformity Assessment according to Article 10.5 of R&TTE Directive 1999/5/EC PHOENIX TESTLAB EU Identification Number 0700 Certificate Holder Wersener Landstr. 78 / 49076 Osnabrück / Germany Product Description Call Button; with Non-specific SRD Brand Name / Model Name Opinion on the Essential Requirements Article 3.1a): Health and Safety Article 3.1b): Electromagnetic Compatibility Article 3.2: Effective Use of the Radio Spectrum CE-marking Marking Example (Class 1) This certificate is issued in accordance with the Directive 1999/5/EC of the European Parliament and the Council on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity dated 9th March 1999 and is only valid in conjunction with the following annex (2 pages). R&TTE Directive will expired on 12 June 2017. Blomberg, 06 June 2017 Place, Date of Issue Signed by Alan Lane Notified Body PHOENIX TESTLAB GmbH Königswinkel 10 D-32825 Blomberg, Germany www.phoenix-testlab.de

Annex of the Expertise No. 17-211288 Date 06 June 2017 R&TTE Directive will expire on 12 June 2017 Frequency Range Transmitted Power Duty Cycle Operational temperature range Device Technical documentation according to Annex II sub clause 4: 1*7 Parts Placement 1*7 PCB-Layout PHOENIX TESTLAB GmbH Konigswinkel 10 D-32825 Blomberg, Germany www.phoenix-testlab.de

Annex of the Expertise No. 17-211288 Date 06 June 2017 Page 2 of 2 R&TTE Directive will expire on 12 June 2017 Applied Standards and Test Reports Test Report Number Dong Guan Yaxu (Ait) Technology Limited Dong Guan Yaxu (Ait) Technology Limited Dong Guan Yaxu (Ait) Technology Limited Dong Guan Yaxu (Ait) Technology Limited Further Documents EU Declaration of Conformity, 2 pages, 2017-05-14. Opinion on the Essential Requirements: The basis of this Expertise is the Technical Construction File (TCF). If the TCF includes test reports issued by laboratories accredited to the standard ISO/IEC 17025,...