The DB3B is a high power explosion proof sounder, introduced as a replacement for the current DB3 with improved functionality and performance. Certified for use in a wide range of temperatures from -55ºC to +70ºC, the Ex enclosure is manufactured from GRP with a rugged thermoplastic flare providing a corrosion free and aesthetically pleasing product. Capable of producing 122dB @ 1m and with a range of pre-recorded tones, the DB3B includes an integral volume control which is ideal when a lower output is required.

The unit is provided with versatile control options allowing compatibility with a wide range of control methods and PLCs. The standard DC unit provides 3 tone stages, each stage has 28 tones available which can be independently selected. The unit can be controlled by reversing the polarity of the power supply (2 stage) or providing a common negative and switching between multiple positive supplies. The DB3B proves its versatility by additionally being able to work with a common positive supply and switching the negatives. The tone stages of the DB3B can also be controlled via voltage free contacts provided by a control panel.

The flexibility of the range continues with a wide range of supply voltages. The short flare option is worthy addition to the range offering a high SPL in a compact unit.

Features
Ex d / Ex de IIC/IIIC T4/T5/T6.
ATEX certified.
IECEx certified.
INMETRO certified
CCCF certified
CCOE certified
SIL1 certified
cULus certified
Certified temperature -55ºC to +70ºC.*
IP66 & IP67.
Optional Ex e terminal chamber.
Up to 122dB output @ 1m.
Integral volume control.
28 tones, user selectable.
3 stage unit remotely switchable.
Tones can be programmed to customer's
specification.
DC supply voltage between 12V and 48V.
End of line resistor option.
Sounder & beacon combination units available,
for further details contact MEDC.
Ex enclosure - Glass reinforced polyester.
Flare - High impact thermoplastic polyester.
Stainless Steel mounting bracket and cover screws.
Mounting bracket has ratchet facility as standard.
Optional swivel bracket available

Features
Zone 1, 2, 21 & 22.
Exd IIC T6/ T5.
ATEX Certified, Ex II 2GD.
IECEx Certified Gb, Db.
UL listed for USA and Canada:
– Hazardous locations:
– Ordinary locations: Visual-Signal Device.
– Marine listed.
*Not applicable for Canada
CUTR Certified
CQST Certified
SIL1 Certified
IP66 & 67.
-55oC to +70oC.
Corrosion free GRP.
Optional Stainless Steel Backstrap.
Various Lens colours.
Optional Cast Aluminium or Stainless Steel Wire guard.
Up to 3 x M20 or 3 x M25 entries.
5 user selectable functions:
Remote and local function selection.

Features
Zone 1 and Zone 2 use.
UL Listed for USA and Canada:
Exd IICT4/T5/T6.
ATEX approved Ex II 2GD.
BASEEFA Certified.
CSA Certified.
IECEx certified.
CUTR Certified*.
Chinese (CQST) Certified.
Brazilian (Inmetro) Certified.
IP66 and IP67.
Certified temperature: –55°C to +70°C*.
High temperature version (up to 85°C) available.
Stainless steel or marine grade alloy.
Xenon or LED versions.
Various lens colours.
Optional lens guard.
Telephone or relay initiated*.

*Depending on version.

Features
5J, 10J & 15J options
Zone 1 and Zone 2 use.
Exd IIC, T4/T5/T6.
ATEX approved, Ex II 2GD.
IECEx Certified Gb, Db.
UL listed for USA and Canada:
– Hazardous locations:
– Ordinary locations: Visual-Signal Device.
– Marine listed.
*Not applicable for Canada
ULC Listed to Canadian Safety Standards
CUTR certified.
Chinese (CQST) certified.
Brazilian (Inmetro) certified.
IP66 & 67.
EN54-23 Certified.
SIL 1 Certified.
Certified temperature: –55ºC to +70ºC.
5, 10 & 15J versions available.
Pipe mount or direct mount enclosure.
Corrosion-free GRP.
Four wire and supervisory diode.
Optional stainless steel backstrap.
Various lens colours.
Optional relay or telephone initiate.
Optional cast or wire lens guard.
Up to 3 x M20 or 3 x M25 entries.
LED version available. (See data sheet for LD15).
Improved inrush current characteristics.
Consistent extreme temperature start-up.

The PH1 double action pull handle call point has been designed for use in flammable atmospheres and harsh environmental conditions. The GRP enclosure is suitable for use offshore or onshore where light weight combined with a high level of corrosion resistance is required.

Features
UL Class I, Div 1
UL Class I, Div 2
Class I, Zone 1 AEx d IIC
UL Ord Locs
Zone 1 and Zone 2 use.
Ex d IIC T6 Gb
Ex tb IIIC T85ºC Db
IECEx certified Gd, Db
ATEX certified Ex II 2 GD
IP66 & 67
Certified temperature: -55°C (-50°C UL) to +70°C
Corrosion free GRP construction (stainless steel cover UL Class I, Div 1)
Optional series, end of line resistors and diodes
Retained stainless steel cover screws

Features
Glass reinforced polyester enclosure – light, strong and not subject to corrosion.
The unit is now supplied with a lift flap that latches firmly in place.
4 basic versions available
(1) Explosion protected Exe (ATEX,Chinese CQST, INMETRO)
(2) Explosion protected Exi (ATEX, IECEx, CUTR, CQST, CSA)
(3) Weatherproof & Dust-tight/UL ordinary locations.
(4) Explosion protected:
SIL2 certified
In line and end of line resistors and/or zener diodes can be fitted.
Variety of colours available.
Up to 9 terminals available.
Optional LED – this indicates that the unit has been operated – useful for testing purposes.
Earth continuity option for metal glands.
1 or 2 changeover switches.
Captive cover screws.

Features
Glass Reinforced Polyester enclosure – light, strong and not subject to corrosion.
4 basic versions available
In line and end of line resistors and/or zener diodes can be fitted.
Variety of colours available.
Up to 9 terminals available.
Lift flap available for extra protection against inadvertent operation.
Optional LED – this indicates that the unit has been operated – useful for testing purposes.
Earth continuity option for metal glands.
1 or 2 changeover switches.
Captive cover screws.

Features
Zone 1, Zone 2 & non-Ex use.
Exde IIB T4.
ATEX approved, Ex II 2 G.
IECEx certified, Gb.
CUTR certified.
BASEEFA certified.
Brazilian (Inmetro) certified.
IP66 and IP67.
Certified temperature: –50°C to +70°C*.
Up to 116 dB(A)*.
Version with independent beacon/sounder operation now available.
27 Tones, user selectable (dual tone option - d.c. voltage).
Tones comply with UK00A/PFEER guidelines
Integral volume
GRP corrosion-free flamepath.
Ratcheted swivel mouting stirrup.
Stainless steel fixtures.
Tapered flamepath.
*Model dependent.