DQD 507 Rev. 2012-05-22 Page 1

Certificate of Compliance Certificate: 2368858 Master Contract: 242288

Project: 70055382 Date Issued: 2016-03-29

Issued to: Ascom Sweden AB 2 Grimbodalen Göteborg, 40276 SWEDEN Attention: Gunilla Landqvist

The products listed below are eligible to bear the CSA Mark shown with adjacent indicators ‘C’ and ‘US’ for Canada and US or without adjacent

indicator for ‘US’ for US only or without either indicator for Canada only

Issued by:

R Papiah

PRODUCTS CLASS 2228 01 - RADIO APPLIANCES - Transmitters and Receivers, Amateur,-Commercial and Communication - For Hazardous Locations For details related to rating, size, configuration, etc. reference should be made to the CSA Certification Record or the descriptive report. Ex ib IIC T4 Gb: Model DH5-aBcdef DECT Handset; battery operated, intrinsically safe for Class I, Zone 1, when powered by Battery Pack P/N 660274/xx; providing Intrinsically Safe circuits (“ib”) for Zone 1, with entity output parameters as tabulated below; when connected per Ascom drawing PM000001, Temperature Code T4; –10 ºC ≤ Tamb. ≤ +40ºC; IP64. Terminal Name Entity Parameters

Voc/Uo (V)

Isc/Io (A)

Pout/Po (mW)

Ca/Co (uF)

La/Lo (uH)

Headset Output 4.2 0.169 629 2.2 2.2

Certificate: 2368858 Project: 70055382

Master Contract: 242288 Date Issued: 2016-03-29

DQD 507 Rev. 2012-05-22 Page 2

CLASS - 222881 - RADIO APPLIANCES - Transmitters and Receivers, Amateur, Commercial and-Communication-For Hazardous Locations-Certified to U.S. Standards AEx ib IIC T4 Gb: Model DH5-aBcdef DECT Handset; battery operated, intrinsically safe for Class I, Zone 1, when powered by Battery Pack P/N 660274/xx; providing Intrinsically Safe circuits (“ib”) for Zone 1, with entity output parameters as tabulated below; when connected per Ascom drawing PM000001, Temperature Code T4; –10 ºC ≤ Tamb. ≤ +40ºC; IP64. Terminal Name Entity Parameters

Voc/Uo (V)

Isc/Io (A)

Pout/Po (mW)

Ca/Co (uF)

La/Lo (uH)

Headset Output 4.2 0.169 629 2.2 2.2 a = Brand Identification; A, B, C, D, U b = Bluetooth Options; A, B c = Alarm Options; A, B, C, D, E d = Country; A, B e = Location; A, B, C, D APPLICABLE REQUIREMENTS C22.2 No. 0-10 - General Requirements – Canadian Electrical Code, Part II CAN/CSA-C22.2 No. 60079-0:11 - Explosive Atmospheres - Part 0: Equipment - General requirements CAN/CSA-C22.2 No. 60079-11:11 - Explosive Atmospheres – Part 11: Equipment protection by intrinsic

safety "i" CAN/CSA-C22.2 No. 60529:05 - Degrees of protection provided by enclosures (IP Code) ANSI/UL 60079-0:09 - Electrical Apparatus for Explosive Gas Atmospheres - Part 0:

General Requirements ANSI/UL 60079-11:09 - Electrical apparatus for Explosive Gas Atmospheres - Part 11:

Intrinsic Safety “i” ANSI/IEC 60529:2004 - Degrees of Protection Provided by Enclosures (IP Code)