ATEX Sounders Zone 1 & Zone 2 Weatherproof Ex d – Eaton MEDC DB1 Hazardous Area Sounder

ATEX Sounders Zone 1 & Zone 2 Weatherproof Ex d – Eaton DB1 Hazardous Area Sounder

ATEX Sounders Zone 1 & Zone 2 Weatherproof Ex d – Eaton DB1 Hazardous Area Sounder

ATEX Sounders Zone 1 & Zone 2

Eaton MEDC DB1 are part of range of lightweight, flameproof ATEX sounders that have been designed with a high weatherproof rating to cope with the harsh environmental conditions found offshore and onshore in the oil, gas and petrochemical industries in ATEX & IECEx Zone 1 and Zone 2 hazardous areas

Electronic circuitry allows the DB1P and DB1HP hazardous area sounders to be switched between two selectable tones by either reversing the supply polarity, or connecting a second voltage supply. The higher output DB1H and DB1HP are particularly suitable for noisy environments.

Stainless steel, one of the most durable materials available on the market, is both hard wearing and corrosion resistant, increasing the life of products in harsh environments and therefore reducing maintenance costs.

Eaton MEDC DB1

Eaton MEDC DB1

ATEX Sounders Zone 1 & Zone 2

ATEX Sounders



  • Zone 1 and Zone 2 use.
  • UL Listed – Class I, Div 1. Groups C & D.
  • Exd, IIB T3.
  • ATEX approved, Ex II 2G.
  • CENELEC approved, BASEEFA certified.
  • TR CU certified.
  • IP66.
  • Certified temperature:
    • –20°C to +70°C.
    • –13°F to +158°F.
  • Up to 113 dBA output.
  • Available in marine grade alloy or stainless steel.
  • 27 output tones, user selectable.
  • Telephone initiate option.
  • Tones can be selected remotely.
  • Tones comply with UKOOA/PFEER guidelines.
  • Any two tones may be switched via the external voltage supply.
  • End of line resistor option.
  • NFPA 72 compliant
Eaton MEDC DB1 - Dimensions

Eaton MEDC DB1 – Dimensions

Eaton MEDC DB1 – Current Consumption


MEDC DB1 Hazardous Area sounders

Technical Specification

Hazardous Area Certification
ATEX DB1P Ex dCert. no. Bas03ATEX0463.
Certified to: EN60079-0, EN60079-1, EN60079-31.
Ex II 2GD, Ex d IIC T4/5/6 Gb, Ex tb IIIC T135/100/85°C Db, IP66/67
ATEX DB1HP Ex dCert. no. IECEx BAS 13.0048
Certified to: IEC60079-0, IEC60079-1, IEC60079-31.
Ex d IIC T4/5/6 Gb, Ex tb IIIC T135/100/85°C Db, IP66/67
IECEx DB1P Ex dCert. no. IECEx BAS 10.0065X
Certified to: IEC60079-0, IEC60079-1
Ex db IIB T6 Gb (Tamb. -20°C to +60°C)
IECEx DB1HP Ex dCert. no. IECEx BAS 10.0064X
Certified to: IEC60079-0, IEC60079-1
Ex db IIB T5 Gb (Tamb. -20°C to +70°C)
UL Haz LocsListing no. E187688
Class I, Div 1, Groups C & D
TR CU DB1P Ex d1Ex d IIB T6 Gb
SILSIL 1 certified to IEC61508. Cert number 20151119-4786827453 (DB1HP only
MaterialLM25 corrosion resistant alloy or ANC4B stainless steel with
stainless steel cover screws
ABS flare
FinishEpoxy paint finish as standard or to customer specification
Certified tempATEX: –20ºC to +60ºC (DB1P)
ATEX: –20ºC to +70ºC (DB1HP)
UL: –25ºC to +70ºC
WeightDB1P: 3.5 Kg alloy, 8.3 Kg stainless
DB1HP: 5.6 Kg alloy, 12.7 Kg stainless
Ingress protectionIP66
EntriesUp to 3 x M25 or M20
TerminalsSuitable to accept up to 4sqmm cable
Note: Terminals limited to 2.5sqmm cable on a.c. version with telephone initiate option only
OutputInitiate voltage: 24 or 48Vdc
Max switching voltage: 250Vac
Max switching current: 10A
LabelsTag and duty labels optional
Tone selectionSingle Stage Unit a.c
27 user selectable tones including, PFEER/UKOOA tones
Two Stage Unit d.c
Switchable between any two of the 27 tones by either:
(i) Reversing the polarity of the supply, or
(ii) By a 3 wire common +ve system, switching between the two – ve lines
Note: Reverse monitoring is achievable on Two Stage Version by selection of terminals


The following code is designed to help in selection of the correct Eaton hazardous area sounders with ATEX approval and certification. Build up the part number by inserting the code for each component into the appropriate box.

Eaton MEDC DB1 - Ordering Requirements

Eaton MEDC DB1 – Ordering Requirements

ATEX Sounders

ATEX Sounders

Eaton MEDC

Eaton MEDC have developed ATEX products designed for harsh and hazardous area conditions and where there is a risk of explosion due to the presence of flammable atmospheres both onshore and offshore – since 1975 MEDC have been designers and manufacturers of alarm, signal, control and communications equipment. T&D distribute the extensive range of Eaton MEDC ATEX Certified manual call points, visual, audible alarms, loudspeakers and telephones for hazardous area workplaces, including Zone 1 & Zone 2 explosive atmospheres.

Thorne & Derrick, are the Explosive Atmosphere Experts, distributing an extensive range of ATEX Certified Equipment including heat tracing cables and systems, electrical heating products, electrical enclosures and plug/sockets outlets.

Complete range of LV-HV Cable Joints, Terminations, Cleats & Glands are available to support installation of power, control and instrumentation cables up to 33kV – includes Cold Shrink for use in hazardous areas to provide electrical insulation and cable protection.

Cable Cleats | Cable Lugs | Cable Transits | Cable Joints