EU-TYPE EXAMINATION CERTIFICATE

2. [13] Schedule [14] EU - TYPE EXAMINATION CERTIFICATE No. DEMKO 15 ATEX 1411 Rev. 9 00 - IC - F0056 - 1 – Issue 2 6 . 0 Accredited by DANAK under registration number 7011 to certification of products. Page 2 of 2 This ce r tifica t e m ay only be reproduce d in its ent irety and without any change, schedule included. [15] Description of P roduct ‘T4’ is a portable gas detector designed to measure c oncentr a tion o f g ases and to indicate excessive levels to the user by means of audible/visual/vibrating alarms. The enclosure consists of a 2 piece casing secured by 6 self - tapping screws. The case material is a clear polycar bonate over - moulded with stati c dissi p ative T P E (orange, black or red ). Openings are provided in the top part of the case to allow gas access to the sensors within the equipment. There are 2 PCBs within the enclosure – the Main PCB (con taining the majority of the electronics) and the Sensor P CB. Th e s e PCBs connect by means of PCB mounted plug/socket which are mechanically secured together. Power is provided by a single, rechargeable Li - ion battery (types Sanyo UF103450P or E - One Moli En ergy ICP103450CA) which is permanently fitted ins ide the equipm e n t enclosure and connected to the Main PCB, which is not user - replaceable. The equipment is designed to be used with a defined selection of toxic/O2 electrochemical gas sensors and flammable/ pellistor gas sensors. The flammable/pellistor ga s senso r s inte n d e d for use in ‘T4’ are either ‘Ex d b ’ or ‘Ex ia’ certified components . Therefore , there are 2 variants of ‘T4’ with either ‘Ex d b ia’ or ‘Ex ia’ protection concepts. External connections are provided for use in the non - hazardous area for b atter y c hargi n g a nd communications to computers. The equipment is supplied with an optional filter plate accessory, which is an entirely non - m etallic fitting that clips over the sensor openings. Nomenclature for type: T4 Type 1 Intrinsically Safe T4 T ype 2 In trins i c a l ly safe with flameproof sensor Performance testing The measuring function of the product for explosion protection, according to Annex II clause 1.5.5, 1.5.6 and 1. 5.7 of the Directive 2014/34/EU is not covered in this certificate. The optic a l radia t i o n output of the product with respect to explosion protection, according to Annex II clause 1.3.1 of the Directive 2014/34/EU is covered in this certificate based on Exception 1 ) to the scope of EN 60079 - 28:2015 . Temperature range T he ambi ent t e mp eratu r e r ange s are: Hazardous area: - 20 ° C ≤ Ta ≤ +55 ° C Safe area: 0 °C ≤ Ta ≤ +40 °C (battery charging/communications) Electrical data 3.8 V (nominal battery) Intrinsically safe specifications: U m : 9.1 V Routine tests None [16] Descri ptive D o cument s T he scheduled drawings a re listed in the report no. provided under item no. [ 8 ] on page 1 of this E U - Type Examination Certificate. [17] Speci fic conditions o f use: None [18] Essential Health and Safety Requirements The Essential Health a nd Saf e t y Requirements (EHSRs) c overed by the standards listed at item 9. Additional information The trademark will be used as the company identifier on the marking label. The manufacturer shall inform the notified body concerning all modifica tions t o the t e c h nical documentation as described in A nnex III to Directive 2014 / 34 / EU of the European Parl iament and the Council of 26 February 2014 .

1. 00 - IC - F0056 - 1 – Iss ue 2 6 .0 Accredited by DANAK under registration number 7011 to certification of products. Page 1 of 2 This certificate may only be reproduced in its ent irety and without any change, schedule included. [1] E U - TYPE EXAMINATION CERTIFICATE  [2] Equipment or Protective System intended for use in Potentially Explosive Atmospheres Directive 2014 / 34 / EU [3] E U - Type Examination Certificate Number: DEMKO 15 ATEX 1411 Rev. 9 [4] Pro d u c t : Type T4 Portable Gas Detector [5] Manufacturer: Crowcon Detection Instruments Ltd. [6] Address: 172 Brook Drive, Milton Park, Abingdon, Oxfordshire, OX14 4SD United Kingdom [7] This product and any acceptable variation thereto are specified i n t he schedule to this certificate and the documents therein referred to. [8] UL International Demko A/S, notified body number 0539 in accordance with Article 17 of the Council Directive 2014 / 34 / EU of 26 February 2014 , certifies that this product has be e n found to comply with the Essential Health and Safety Requirements relating to design and construction of products intended for use in potentially explosive atmospheres given in Annex II to the Directive. The examination and test results are recorded in c onfidential report no . DK/ULD/ExTR15.000 3 /0 9 . [9] Compliance with the Essential Health and Safety Requirements has been assure d by compliance with: EN IEC 60079 - 0:2018 EN 60079 - 1:20 14 EN 60079 - 11:2012 [10] If the sign " X " is placed after the ce rt ifica t e number, it indicates that the product is subject to special conditions f or safe use specified in the schedule to this certificate. [11] This E U - Type E xamination C ertificate relates only to the design and construction of the specified product . Fu rt her r e q u irements of the Directive apply to the manufacturing process and supply of this product . These are not covered by the certificate. [12] The marking of the product shall include the following:  II 1 G Ex ia IIC T4 Ga (T4 Type 1)  II 2 G E x d b ia IIC T4 Gb (T4 Type 2) Certification Manager Jan - Erik Storgaard This is to certify tha t the sample(s) of the Product described herein (“Certified Product ”) has been investigated and found in compliance with the Standard(s) indicated on th is Ce r t i ficate, in accordance with the ATEX Product Certification Program Requirements. This certificat e and test results obtained apply only to the product sample(s) submitted by the Manufacturer. UL did not select the sample(s) or determine whether t he samp l e ( s) provided were representative of other manufactured product . UL has not established Follow - Up Service or other surveillance of the product . The Manufacturer is solely and fully responsible for conformity of all product to all applicable Standar ds , spe c i f ications, requirements or Directives. The test results may not be used, in whole or in part, in any other document without UL’s prior written approval. Date of issue: 2015 - 05 - 05 Re - issued: 2022 - 05 - 16 Notified Body UL International D emko A/ S , Borup v a ng 5A, 2750 Ballerup, Denmark Tel. +45 44 85 65 65, i nfo.dk@ul.com , www.ul.com