• Robust corrosion proof GRP (glass reinforced polyester) termination enclosure
• Ingress protection IP66/67 Type: 4/4X
• Threaded flame path simplifies installation and inspection
• Multiple cable entries
• Stopping plugs supplied
• UL521 and CAN/ULC-S530 approved
• EN54-5 compliant
• D-A-F rate compensated heat detector elements
• Versatile: various temperature settings available
• Durable: long lasting stainless steel element shell
• Reliable: hermetically sealed internal contact area
• Economical: wide installation spacing reduces installation costs
• Factory set temperature
• Globally approved to IECEx, ATEX, UL, cUL and ULC standards
• Version E: Zone 1/21, Class I/II Div 2
• Version H: High temp Zone 1/21, Class I/II Div 2
• Version I & R: Zone 0, Zone 21, Class I/II Div 1

• UL/cUL – File ref: E245313
• IECEx UL 15.0003X
• ATEX DEMKO 15ATEX1448X
• UKCA UL21UKEX2136X
• SIL2 compliant to IEC61508 (2010)

GNExH1-E: Product version: E
IECEx / ATEX
Ex db eb IIC Gb T6 Ta -50°C to +70°C
Ex tb IIIC Db T75°C Ta -50°C to +70°C
NEC Class Zone
Class I Zone 1 AEx db eb IIC T6 Gb Ta -50°C to +70°C
Zone 21 AEx tb IIIC T75°C Db Ta -50°C to +70°C
CEC Class Zone
Ex db eb IIC T6 Gb Ta –50°C to +70°C
Ex tb IIIC T75° Db Ta –50°C to +70°C
NEC / CEC Class Division
Class I Div 2 ABCD T6 Ta -50°C to +70°C
Class II Div 2 FG T6 Ta -50°C to +70°C
GNExH1-H: Product version: H
IECEx / ATEX
Ex db eb IIC T4 Gb Ta –50°C to +105°C (T5:+90°C, T6:+75°C)
Ex tb IIIC T110°C Db Ta –50°C to +105°C (T75°C:+70°C)
NEC Class Zone
Class I Zone 1 AEx db eb IIC T4 Gb Ta -50°C to +105°C (T5:+90°C, T6:+75°C)
Zone 21 AEx tb IIIC T110°C Db Ta -50°C to +105°C (T75°C:+70°C)
CEC Class Zone
Ex db eb IIC T4 Gb Ta –50°C to +105°C (T5:+90°C, T6:+75°C)
Ex tb IIIC T110°C Db Ta –50°C to +105°C (T75°C:+70°C)
NEC / CEC Class Division
Class I Div 2 ABCD T4 Ta -50°C to +105°C (T5:+90°C, T6:+75°C)
Class II Div 2 FG T4 Ta -50°C to +105°C (T6:+70°C)
GNExH1-I: Product version: I
IECEx / ATEX
Ex ia IIC T6 Ga Ta –50°C to +70°C
Ex tb IIIC T80°C Db Ta –50°C to +70°C
NEC Class Zone
Class I Zone 0 AEx ia IIC T6 Ga Ta -50°C to +70°C
Class II Zone 21 AEx tb IIIC T80°C Db Ta –50°C to +70°C
CEC Class Zone
Ex ia IIC T6 Ga X Ta –50°C to +70°C
Ex tb IIIC T80°C Db X Ta –50°C to +70°C
NEC / CEC Class Division
Class I Div 1 Group ABCD T6 Ta -50°C to +70°C
Class II Div 2 Group FG T6 Ta -50°C to +70°C
GNExH1-IR: Product version: R
IECEx / ATEX
Ex ia IIC T4 Ga Ta –50°C to +70°C
Ex tb IIIC T80°C Db Ta –50°C to +70°C
NEC Class Zone
Class I Zone 0 AEx ia IIC T4 Ga Ta -50°C to +70°C
Class II Zone 21 AEx tb IIIC T80°C Db Ta -50°C to +70°C
CEC Class Zone
Ex ia IIC T4 Ga X Ta –50°C to +70°C
Ex tb IIIC T80°C Db X Ta –50°C to +70°C
NEC / CEC Class Division
Class I Div 1 Group ABCD T4 Ta -50°C to +70°C
Class II Div 2 Group FG T4 Ta -50°C to +70°C
See installation manuals for full coding

• E2S H1 detector temperature is factory set.
• Per UL521 requirements – low temperature exposure test is – 22°F (-30°C)
• E2S H1 detectors are designed for long life expectancy, however due to various field conditions it is required that the detectors be tested annually per NFPA guidelines or local fire codes.
• Replace the detector after any fire or heat related event, any mechanical damage, or after 10 years of continuous service.
• To avoid nuisance activations, select a temperature setting a minimum of 100°F above the maximum ambient expected temperature.